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 0x9d79174735f2bb4bdeb98efcb18b3890b6abebd29e8702055e3c859edfa79cf1. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3dba695-cf97-4fb3-b72e-77cbf14f5102.json and https://artists.proofprofile.net/proofs/artist/c3dba695-cf97-4fb3-b72e-77cbf14f5102.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 0x4cd5663937551038ec30465d61d679ae1a0a328f6f36edba309a15d71bef6acc. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:34:26Z), 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/QT3FC2536926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37402199548a9d6b2e0a2bf0765a0d357b72d64798c081e0ad8ef87533c3adac. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:59:53Z), 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/QT3FC2536907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d5bb7ebc8bfe143b4fdbb056b8e0e7a1f6d57de035b45e898f4508d8ad7c2d. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:32:47Z), 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/QT3FC2536918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a8e30aae893f5d967b846b9b13b16b8cecf5189f7148b640a4ae11c3f31bf4. 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/QT3FC2536901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef367c96bf82117ab43dda0484d658279b230f462ed288a633c0ab6882e8163. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QT3FC2536915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3497790440b9891429e6b7d8e838df54fef255de8b6b902bfa011a46f1ff51e. 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/QT3FC2536877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52979cc92082fd8f6300da8673cd91a7812d44c24c25709c5081d1f476a49ce. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:00Z), 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/QT3FC2536947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3094200a279cb44af36c9ac71e05a16a7ecb5090e53fee32b7231d612cf429. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QT3FC2536925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0496f5482c573dee01f0b5df6142fbf9967e8e4dc9a2aa1cf515cda3940b47c9. 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/QT3FC2536885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5abb610e5e5b36d969d39032b9c197c362bd2792f75391c67c3f54d4f59a0bc. 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/QT3FC2536945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f1d7ab56b38a6eb13df71e999c472e744ca03110db35e7855fce2bfd89f59a. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:41:06Z), 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/QT3FC2536939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe598aa0baa27952a94a1b821e6341c60a7e7fafcd46c983855b4da05a57122e2. 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/QT3FC2536921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f77e15942ed68b7c18c637157880eb114d853e62e7a538841e8a2cf297c2f70. 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/QT3FC2536898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d1a27f9269c274700550a0d726177d756fc52bd14822d13344f2a93bbc8992. 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/QT3FC2536871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796b2de2c744ef1dd6c3c194a92d001e23c8158c9c161894be2ed7cfa11d4467. 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/QT3FC2536902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb452a75372f0d943f791fb659805d07e0d0c21099b10c30c5af94916782da1d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT3FC2536870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cc7317d0bb385b3686078df64565f993f312a9073652182b280a6020d29b74. 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/QT3FC2536891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb41a6342c5791dbf3143f6810d5245ccb01473e2eba1625883a8c76154c649. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:57Z), 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/QT3FC2536909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ebe325a26d4c252f11a14cd6b2d756790fff6893824467a877c997190d5282. 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/QT3FC2536948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed6af1f9e35a1226a6be79af916106bfd2baf49931c38d34cf2db3dacc4b27e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QT3FC2536879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57489f9e3968b02a372bf9fcde3d19479688e4b40b35d33c293b86428280b6c. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QT3FC2536890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2446f6558b0856a725c3596339c4c7bdc80a0a790a8bba84526b3cf386f82fa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3FC2536912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e5bdc0c04eb1b31130e9f4776b4d8e05373a7084f491384fe91d24b02ce901. 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/QT3FC2536875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fb7e0bf8c7014c15b040f89e5a43df0283556581d4119dedc2fa40d5b4efa3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:30:24Z), 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/QT3FC2536893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2186e8fdcbb9e48240eb56abc13ed62e75197078342b6695911d4ee443f27cc1. 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/QT3FC2536900.