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 0xc328cd71d0714ed48870b896e4efc057c6255bc7d9ac3e3ed3bc70f0dbee0d36. 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/efc420d5-c355-4041-a8c2-e4dc55c0a358.json and https://artists.proofprofile.net/proofs/artist/efc420d5-c355-4041-a8c2-e4dc55c0a358.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 0x284c651243938cbddd6a4462c07fc87995a578240b947929c0ed96cb245541bc. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/INT802201018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9305fcac16c60659319d21052e5af19163818f319f50342c530e56b559f0cb. 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/INN242401472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc941064718c1981f06bbfc306efb11fb91ea72d57f9d7ec0620bfb4df3bb5621. 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/CHF032409382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2aa7e7baafbfe84bd50194144ab2a890084d93e502399a628d7f81203743937. 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/INT802201472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f6d8a73fa3d0a23176fab89e73b2ba237e2f1e4c620b5064853e5c7b57ce6d. 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/CHF032414648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01d7e56c8f7cc9f5d60e31e49bfce806f5e97171f522075fed95b5ca7c5fb43. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:59:48Z), 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/INN242419857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b84951f410ad49912f75bf5a33d8b94af89290ca8fe82312358135fb6f23fa9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/INT802201671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d77d7ccc4a552198f82d5e9c784e17d4a7088bbbc6d4146494c8366e75a58f1. 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/CHF032416648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fba9b5b2a4ab0368a5a5dfae6622829d8437e423ffb44bb0fb89067898cb1c. 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/INT802201648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82135061a9c2a7f500fedc7c851ff480c2cb72f0d3e2346792d6ba18c460ffd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/INDF22400244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba998ec1f83aa14318c6f41fd920988a86fa5b751d099a6ceb71f801c51f309. 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/INT802201741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30106bf4f97aa55310d22725f104687ecd498fd09a1af52bc672abbfb629be9b. 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/INR822560034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6726cc0dce8499297ee21670080f21cc7d01e861b86306a3024960a1953b7a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:04Z), 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/INT802201842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6991f42c25f2c5168637cafd6f7bd8f87c731790120ddfd570c5800b0e2456. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:24:07Z), 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/INT802201841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9061bda6d2ac84ae3299b5e569e0483d6c1606ab0bb4d39786d5dfbb08e56276. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:18Z), 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/INT802201861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60eba469dfa1d010f216d39fe7a32e9ba096860ba49dcb1aa6119aa3abbdbee. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/INT802201912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1418c03c8ad4ec2b7b29de5328e932d2602f27f0676a6611f0a0b8105884bdce. 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/EGA252505645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb3953d9ec4d43622bf6ef8f0e4653c21d20de16ff94cdd0633a287a33e2024. 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/INE182574296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076132fddb86032314848bddab359ddb675b60f2f6e58cb6eac6af3426018fcc. 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/INE182574286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1c909c14adf26b0065610e3ba7598d16d19319bbf7d634017a21f1e89c912e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/INE182574284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fee483a8ab468117a75c1b7d4c4f6fa1c9aac6ef399f0b40b820a8f54442774. 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/INE182574280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb41a9e29855eef5237f4cf8611af563b4e445a3978883edc5a250ae162f01b3. 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/INE182574288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc9790c0ca16b9bae76107f33ffef3968724f748e5e9a22ce97d0fa9503ed31. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:51Z), 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/INE182574279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e7485c8cf2a5e923363157a5bc929a2c1ae2c33d4919bb3f050c9dc89c3e74. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/INE182574302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd93d4fc40fea733b99d55a39b36eff32963f0c3d24f100adc9096344924b3f. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:22:56Z), 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/INE182574278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30dbcb91d1a24e62914b1f65cd51dadc34eb5dedcae136ab636b2a226339d52. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/INE182574292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0548a80526d301227002f7719b7ddfa9e950f69737f5b152563fdc73e7901d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/INE182574290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8256602cfbdec2593b7eebe08029cb8214a2b5b0e6b093430336a2f53d80ebb3. 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/INE182574282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa59f2f410aef5137ba04e8de0ab6fc1eb81816dcfe56e8731a7f8a74fe44635. 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/INE182574300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45f63acccb0cc12786fa1c2e2ed4d462a0e313cdd9e872df26441dff4137e1b. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:31:20Z), 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/INE182581286.