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 0x217b7ba399372b53b71917f833881990daf3d127916cf65a5608c0fddf2446d1. 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/04773217-ab15-4645-a0eb-f62324de6285.json and https://artists.proofprofile.net/proofs/artist/04773217-ab15-4645-a0eb-f62324de6285.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 0x24543e8b0ef0b4449d500d2a4b23accefda42baeb0d17a61c6e1792d251a8a20. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/TR0061600252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d84252bc13fc9ce7381b3443f607e21b784316a4f8a029ec371ef6b0f25c0c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TR0061800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce7a57bb1d1e1ccac86da2cf81b8062e2e9f7f07adcd22b78c640182556dc1c. 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/TR0061800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778818b3b5f99bada57f52c03ecb069a3e612411ed8af1f38a7b8506fa8515d4. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:34:02Z), 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/TR0061800125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a691e7b4492c3e9544031a09928b3913a5875a04ec55eaab34c2bdcfffd545. 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/TR0061800129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b81827a42be30bf11f341f24728e218def503eed6786db83462a662c9e295b. 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/TR0061800130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc612a7a9de336db9e3e9aabbf6c46415e23770b1267374424e493ee34c481f11. 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/TR0061800131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797e73948c72e770047fad88cf2c62b1f8d4022d6347fe3b90aaeef16876065e. 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/TR0061800490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb33d388c96dfd3be0a2575e1543a30adc20b362f057ff801d7f6612ff48bcf. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:41:23Z), 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/TR0062000264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edee67c11dfefc159429ea8b0f140dda552b4d826506b4651576f6e6dc0cb34. 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/TR0062000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2308c834322374abbddee4909ae99b1dc27544a64bc83ce52e1c14c8e179b50. 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/TR0062100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481d738dd5e894f9623789a77f1fa282e137b1fd702254d58f964234b0aec9c0. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/TR0062100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f89e760dab7832eefede88ffc472be122f8342ff0ba095a20f730b754709f39. 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/TR0062100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae61fd1c31df46b8555b95dd74a0cf2c548c3b9b2be4c51bb8f08c092473921d. 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/TR0062200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3e562b4e017ff5578388a18301c4aab99d8744bf8addf8e3713fc35423db87. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TRA162400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568ffdfc6bf307a1a852acf26730db94a0fb34b905a1e9d8071f3a8b25809c89. 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/TRA162200585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1752d3d52b2a2a8af867febf1e658e75ceb3d1dd0af9465a2cdfcfe0e2a7858b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TRA162300284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225b2c2b5679bdd82ca12576ebd75253c1e8fd50a5d63d6e16f02b9c3960d1dc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TRA162400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501aeaa70ed3a9071a9484494e79bd282795bc4f9e293bffe37b72218748521c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TRA162300573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb008cdbfe7690cbe89e3e859994f779daeed30e16947350c9efb202e8272ec9f. 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/TRA162200628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa788d08eb2391d2016211622fda6efe6ab000dfe0bb47429dd41b95c34ed96bd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TRA162300457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68488ae269b44623834889770c23957880d4342c3d71e8be4036d7108bcb42af. 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/TRA162300350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb990bd6649debcdbc19b818ee71b87d808dce943089b30fad3c4b3f6f57f34c4. 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/TRA162300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1487953fb70cc55c088024846f62f8b4cb985ffb7f4aed3ff9f07207747537. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TRA162400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a9ab99fb3beabe55fb89a863936444278a7cd64063fed3db874f301615627f. 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/TRA162300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d3ef4bf8878c1137ad21821f08c8f341d559dc9a9dfeb7c5ada6deea15282f. 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/TRA162200722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405e994235c2a927e0ee6c3561b0b832084eb4e64f58d740ed9e5532f5c6dbef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR0062000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884c3140bdf0e874edd0e62e95d28c65e892efe52b5aa7e349cfd04f252d66ff. 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/FRX282293726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a56141b7d474ec89fe7bf42e76f72ed161e0e82617084d851738b1d1889acea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TR5461800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9d2368aed344acc5666dac5122abbd9745dde6c609a9c9e2f3cad7436b4288. 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/TR5461800121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f85e41f87a11c04e27537005e1b0947c17660706d86246d3bfe9c61f56cf23. 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/TR5461800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c1b388dc0b4395d6db5adfd2a57272776367faeb560f93463951b223a628c7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR5461800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dc73f057076fce03171c49b01823a9b8052b9af3d473dd994e60c03b2b00cb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TR5461800124.