1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba51484589039157b47c4a6dc17f4183cad46ce4b6c90beba42b1b34efdaeec. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66c4b3a3-243c-4637-b31d-c4dec43405af.json and https://artists.proofprofile.net/proofs/artist/66c4b3a3-243c-4637-b31d-c4dec43405af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5044de6ef58b4a40778888a7ca24529966d06be73c2dd35bd9ec6eb0553929b3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMPKX1827674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c6d82b1556b8abaef64e5c2169be1f1c1ee95b229ea4c049d8d8bb276d5d1d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:11:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYY1921764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307acce3b7bbfa39e16025460d4f7f651aefaf8664d5a8476f6fa2f470773ea7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ62061189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9416d10fa2b8d62ed377cfca84a3a0860f8eb743f23ba95d88230ed8b81729d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2039766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffb8673a4b5845647e3785e971fa6c334f8eff57ef16142de25a04f072fd481. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52121770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064336a76673cd0b5e4171e1c840c6084ee052aa7c195846bb1906473e4cd76c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82188485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065c4a0503c58bbbd641ec9ec785f5c27b6dfaac58ab52797f229a8c2781d926. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2155602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8762ecc172ada259c8c6883c56f5eada31d56b3e008fcfb19d8b706b8dd7fef2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:21:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2194307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5a4720a7471027810d91808e9700881366b97afe86b4031b80246b539690af. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2194308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ff8b7b8d7c98b62456fedd9e8486fcb2fddbf878d5f6a47595c54a48f732a7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2194309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3389258f714209b973019b10f63a22246b753ca444ecf31494439b31553b842. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2194311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3058fcc9df4ac340fab2d3cdd46475e941a862c4982723a76b1b322981178502. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2194314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cb4fd2b800495500308a89f815169940d0821e56ef36bb56bb3dd6d4d1baa5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2194315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411e5cffd5ddf76b62c94fd7693758fc3eb8da29047c4732b1ce10e727aa7164. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRPB2105645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2a69729745cde24fb04be575e4ce12588300b59ba6933786303c93c370b7b9. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2183110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eb95c9269abb138a2ab1afc7f9388fd8c1bf89432b6e9e8d3f74d828ecb0bd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2142664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb246179e0ad3954906680b920fd6ef3400603a2d5db7a4f95e22f38032c82d4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2220765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb246179e0ad3954906680b920fd6ef3400603a2d5db7a4f95e22f38032c82d4. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2220765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1978dc0fbfa66d81224074ebe38c0bf67b5b49fcb5a761059d74f12580e500. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:37:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWW2345806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8a5d179a52d40b52b52a12e8f6150019e16674cb2f0a61341389ad939dca35. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWW2345807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d4a288a4932a359aaf1ec9a1140e7401e9137d562906f20875f9e9c8c11f1e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWW2345808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe027e0deef0d04ed7e93682316f47a3d0a05e77ffac5ea5b84966728b4976682. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:43:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWW2345810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59968ff540796f99a6710595b136082e410f8e56496c85cc36f3dcef5a80c70a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWW2345814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07063b8ea16275907d065cca6d46d4e741d496445c9f546a1b61b4289e9fbe33. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWW2345816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974c5448cf6400b88c91b7574f74a2797d297fbefb2b57526ade40fd6ca2b875. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:01:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWW2345817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b399b3f9948b3a94aa06916235bed09c22f684a02bc1cfe8e53f94421d33ce4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWW2345818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe6c65fa1b9d0c4b77dbfcca57a30d97a29a5afc8a3ae57a6ec7abace27dbea. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52445278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba364c725347eec37fb23d933205fefc56094262d31bb6526783c4d789fec4e5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2459614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc78ac55cbe1caa44e011767b0f2beb2a0695be20b190a393cfa67b6f60033c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFP52307314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9ee2ec50f275c8028ba94f5ab5c6a7aa1b202bd439dafc50f17c90a91c66da. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7U2476521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd367edb649e56715f49896155e2895321fde4c3423131cba599a91829e4e199a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7U2476522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16705cb2d64a11780003dbef347505fc3368a87c3bf0ba9330ed0886032c8e4. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:21:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7U2476525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e4f1c453d9ecf2d2983aaf533243c0b695de197ec2e2e461a2bf41628750aa. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7U2476526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57394cd6e8f8ce4ed9a8d83ced8442628c80fc743cf930c080599d9fa171b9b3. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:10:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7U2476527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704aafaea3166d8d9d0d151fcc490b0e29e78eac9aeb88988e4fa6f652de256e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3EY2422271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a98b8dc0b96a5e3919f6924e71a37a62106e14781c9a3fdfd0524fffb0853f6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82538301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7926e4e96e319f4b0f38512a228dc781c94aa5ceaa4d532d4b9c86da30855b9c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62516395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc600e29e7c163a384123578c55770c7aa5f657d041e5dd0baa6a84240dc596cb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:54:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2504673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6646692672ee4aa78ae8a3752ab0ab7379be2908720d14f64c3bfec1f520da62. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFK2326033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa42a362adfa108fd1efd10fb4b454c44193bcf7921ed340b84fd72a0affee2. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2504675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5be3e9e9ced1b5086368a140323f10f8f434a71773a331b01a3297412e9fffb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:41:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2504676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bd5471d441edd7200474b4324576f0c228d26a80ebea8c109e37affa192190. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2504677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5bb64916eebd13b6a9b3a47ac418618cb9ecd21537639fe2c8e54e3b2027d7. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2504678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd573b93177a4e17109e6e7d2cb157ae2791a084f3d7e6d3381b56ed90f7087. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:54:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2504679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0fbcf12616a25b143009fad19fac8ebfd117b34d3c7a64f6cbf5cd07812e7f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2504680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681fe6ab127b2f35f79f2e948a8df4654e420c51c894a9c16201945fa0baa1b3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT4K52540670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde16da430407b2ba50326430080d1a3a33219b40aff4449f0e93640b77d24570. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB72504125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efaeff4c4c804ebbdcdb6041d91b1e640b7f6db4bf2780f2f4f51448e00e3fc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES51973102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf66206032796a5329da69b79a72847efaef2ad2ba86a60cadb761914399ac75. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81815409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c67be603457f718b68c510b55e6d901ea8732c55cb1ec485717c65d74a8ffd2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN61961549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dea8cebaa2aefba65f4f622652729c184b550bd9432fd3d02379cb414ce96a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA41874660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5e2a03051151df3cc479b35525ba72937fca9e85a22f696190ac63fe667299. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12231501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b14a12855fd86ce664a9022fea71ded5acf05513aa94ae4c0b82c6a882d156d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLCK42229591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ea1fb37650f00772b8df8ec09c666dde6dd08c6412ca5192e9f4c60c0c368d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2381676.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037284ce3ba2e0fe23e89d8a7417e036dd94c60e63574bc579efeb0b4b9b70a2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72058505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe839599bd495af70a83d89491fee8c7fbf6d95866ca7ac6d89dbb5994639219. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN71944312.