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 0xafd68daf6ac525071c04fe10ecdbafcf4ed6fa5eba455def6161b246a75f63b0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd936e8b-7942-41cf-9eb4-8728c7a28092.json and https://artists.proofprofile.net/proofs/artist/fd936e8b-7942-41cf-9eb4-8728c7a28092.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 0xe30e8d23b1a24faae3d9093a224152213c4a9e74006c5e7a1d2397a7b68d57d3. 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/TRBAR1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ff8305ba89767b6dc46e8ace30fb9477023285928d74ecee6deeac4118f887. 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/TRBAR1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a6fc4eb25049f36f22bb0c10c71efd646f8746c26fe280bd6b5d48ba60ed64. 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/TRBAR1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34c780caff2e10a8aa4369c7522b83488710d0c88f665f1a69cec414fbca9a5. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TRBAR1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64737953d88c88c12a10eba5722bd9a6ca7f03395d308015a0e8d3feba356ba. 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/TRBAR1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1202e4fed8597468a5b0e03e4e8a5910fa93b6b4ca8e2945e1630139afdf28. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:35:52Z), 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/QMFME2043358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9397ad35fcda57a974077a7cbc6c2c046099e8951634910d759561a9c3c3a3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TRA162100691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfae0cca20614bbd07bc679acf4b091086c07c2681f510492701b64de5783f2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:00:38Z), 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/TRCAU2100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72baf607a1f03ff247a5769629e90669c4f67c8074621c946e5294cfae9186f1. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QMDA72271358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be37f5524e53b52a13c7c0b649df479195c96bb0705f16cd01af18d59322844. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QM4TW2447074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f802198dd2cb9add1a281bcc253bc2e81102d45120ef2e9de80a72aa11aec1c. 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/QM6N22415717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe33a2a74392558795f3aa3b5a1ec29bd5175a6d0d0940464fa6f2df235784a. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QMDA62494142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaeb5c304393d6f87c124a538ddea6fe180476cd19a89d2d390a09e170b6f482. 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/QMDA72470308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79c8823f847a8062465091cc0821eb668b91b86e81a522aab46ddcb19629203. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM4TW2523175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1430254a6031fe0ed0a579dcd66100391edc8b8661fbeaca0d78115e67497a0f. 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/QM4TW2523526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44024a8aebeb1b476df8b571b492fd0664135dbfe9c5161a9a598b0b261c900. 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/QM4TW2523528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4daa73680a4bb03c57be84d18bde398bfde9b52c94e6dae6bf27a8f98bde332. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:02:38Z), 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/QM4TW2523569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19df71304e8252dbeedc5d1fe38727538d371bbe54edb41cd51988e16a2fd15b. 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/QM4TW2523677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bce25ca02c5e8aef3ca330783c78850f54cda9a29e6a3855021d9dd3ff94055. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TR0281705615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d3ca7630091ebad0a3b306f2ec8b0558a4d96a93838b2286024b7fefc48c5e. 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/TR0062000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4094960b56322c9e368209385375309f8550ee1af4e834059538c68fa09cc51. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TR0331711091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67190fe74f30589206a162db3db371c2f1628e24c5837700d7f90caa9a750b6a. 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/TRA162400669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8af9d19427c271369db3885e85eba2c9de8889355f133ff21a33d0ae265cb15. 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/TRAHZ2000032.