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 0xe3cc04e299dfbb05a2e6940918767e037c71f72c8f47e8949228b1f550d3d838. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d63a3a81-0b74-441f-a4a6-07c96e96841a.json and https://artists.proofprofile.net/proofs/artist/d63a3a81-0b74-441f-a4a6-07c96e96841a.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 0xac8e521fce12ed8e918f12efe6d25e520098d998d501fc0eff5d633478a7f117. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NL4NL2115737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdb23d633179146cd0d5d8b051f3b90bb87afbf9241fe380064eafb535aab6d. 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/DEZC62276138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce9b1fd2910c800133052e0c29a242b22d0a9361222d0efafa688858936762f. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:47:45Z), 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/NLS6R1714774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53db9b60d7c3fef1f3ed69704eb5eb7885e73106faaebca2199c43a9962c19c. 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/DEZC62319996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485408ba6366a329ce04dc45b05ac84ddd747cd504c4628f10c1ec03e1665612. 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/DEZC62346593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed21facb2241d125e5be04226aae3337386b30293c0ae17619edf0c8c15e098. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEZC62357899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4b21c342c239c1d7e23c34c9a9174771a29cc499601a9ce6a54b037c08d91e. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:51:40Z), 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/DEZC62357900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8792adf722faa189c6cc3e325b3d592fb2809a65d4b5ba36342998fd4735bf. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEZC62357901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbce98e7a1e89f894a3cb40be6e98e053a3dea1c7c46708930439d02e89e3a5d. 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/DEZC62357903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4df07d1fbf292945a2bfc6dec53a6d8dddfb0c206097a50fe92ae7f50a98e6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEZC62357904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83192adfd4d0544d7ef79cc41440f3b102b3e1483ce0406d6443b254e35f760. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/DEZC62378486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0cd08c9765b237ac4c536f6b6dc4553887a91737de9c9c77bbb53b70ed39b2. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GBLFP2475707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca1afabf8aa8a4c24f731f43923ab36aa7ddc9b79cef03e1b51f4bc534104bc. 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/DEZC62410631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb86946bdd68d34da3a457169ff7ff7e727365936388e62a9239f0885b05f4d. 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/DEZC62464546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a75e4f704c98245d27f2fa42260947d2d3f8934f9317aef2b282475d337a6e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:37:20Z), 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/GXHND2511791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62525ac8fc45476ad3b5228ef6fda3e09f5b0798478a16ac9a54c0d51a904273. 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/GXHND2511794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0e813226503734672f7add0bf9e06fbe5065483fa9be33f48c33ba9ec754aa. 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/GXHND2511793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f942350b93a9165b97992d8147fb3b0cb024a62171c9cd92edf183e2239891b. 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/GXHND2511790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83e3f8266f9e6297c7a9c7181fc213998d4dc1db85fd479f7bb3d7803d49b49. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/GXHND2511787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302dd05050b3dac548d280520fcdd35960557d16775dcf0b216df8d9e30bf900. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:48:57Z), 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/GX3Q92554235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fc561719963e4c304e95be237638c79bece908db293fc22cde5724dba09774. 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/GXHND2511796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe23036cec2c05536f9fe7bfe4695fcda71456b941e5121e2c95e065d7407a5. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/UKXN22522247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad66bb6b0dbd3f3046b1db51a0548db8b59c6e122b03c4d64fd298a28f49a313. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GXHND2511799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7990eb94d26c89595a9c5dd28a3017917ab8ad410ff3083095d0b7cf3984d8. 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/GXHND2511798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3777efb17942cee77e0c7bfec8631f2673b946fbdc98c6b21023c54c10275c. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GXHND2511797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55c47bf52eab878225d2fdef04e02a224230df75a61d4ce8f666c079925e2ea. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GXHND2511795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74f31f40f3433f7d702a337046478b4152bbb0c6d7ac306840e04ed2af88a0c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBMA22555125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825339bf50b5a2b90fb76226ffbbcf8ac39bea24d112c381f454fce8b469d8c3. 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/GXHND2511792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae6bf0be8b99da135446f9ca4b5306ee94a3fecb39b412ea375c328bc46f854. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GXHND2511788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23415b631edc87c335bc2864ae952466930cd2632618f25c5b407153c830ea49. 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/GXHND2511789.