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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3f0e44eae760a614598b7124b1e5d8c17f007af8847387ed89496fc9663781. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/452969f3-e1d2-4f47-8335-c5c36ae7f8dc.json and https://artists.proofprofile.net/proofs/artist/452969f3-e1d2-4f47-8335-c5c36ae7f8dc.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d8ca37df608b3ba0fd874a6e1d5bfbbe676db773e59bb97c0e4eb052067420. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZ5MK2400382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd694f2d19e98498144f5f235cfdcc90188bb328417e34c4632da8637c58a62. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ5MK2400383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc89e30ba05cb1e5a1b79df0421be82511aef50ecd0598b4d541d9074e92a819. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZ5MK2400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597a1c09da1fe92d1df4201cc7d66e831a2d12aaa10cb45034a8ce7758c25808. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZ5MK2400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcd13aff049bfa0fdb33115c6fd6403832932c0e8674aa46e5cfa52bb12cb71. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZ5MK2400386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1b9befd3c5ba794bdb6621835d1ba6838755afce87e2591d110fb1e63ef30d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ5MK2400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1448ac101bf94f56f2b8283e19a065eb91754d6374007c6b701fa75782f2891. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZ5MK2400388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259552e1ecb56fa8acc925e8ba9e73aec28716bbdbc3b5ab8863cc89624b4af3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ5MK2400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cdf0ad955318b136831f8304e811abac10e5eedd6e72db888832abc2d4b69a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/UKB632200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2235414f86c93cc0f7abddbabee2ff5bb447e1ef832f05a69ce4312583cc9a. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/UKB632200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b957776bff223c4a745861bc2afabb16f7cb4000058f6aedbd7aa2fd05f865e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UKB632200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9c38fae4a71d55f64157ae881f16b8984f64ddf308832c117e5bdf19963409. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/UKB632100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabeb51a5ba2d53a10976631b8da172036925d5596b9aaf7cecb3d1bef61a1d7. 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/UKB632200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71cdc8c95e3f5b45a79ed3548cae5c65c59640641128f47dc6edc1c4c01ef98. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/UKB632200008.
Live Slow (feat. Herbal T) - Extended Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4641a01633a3b422cd14c71c485d0225e160e90c65ac24eea5f33ddde2cdba. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKB632200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8daf3177a1701dafb7ab0a1e8efe0342874d54a240abb1951935cd8b2966b0e. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/UKB631900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb706c2050780c2b6c16c4eeeed73e62805f19da236b37c9c06f61e6b35906be8. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UKB631900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3495fc5257973768a4233aad7dab906512b63433b7a78800cddcae22910f23a3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKB631900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41f09ca558a5286df2e20468d4ba3f6965c9f86b163354e9c489819fbe5fabc. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UKB631900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc091d542cb49f8c8de4aa2ef1322bdf3b24ccaad55c15868d50655234de9ec5f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKB631900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8ec1d2b8fe9b5079d6a4f59f27857e5e316d29b5ffabc313d2987f84e399a9. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/UKB631900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afe9566a9e870084c8078ac24049412a1cb29f5f096c61de1ba183e485a39ab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKB631900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0839e3b9bd928ac1b79b514602de1c2138e256aa5da4b97d448b2f4e4f1d5f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKB631900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090334f9b1d8c6c8e945ce5b6b0f9cace4478cb0122ab2737d7c8449f8d1d2b1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UKB631900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7682af9d5e006999c45e31b52638529bc83d3af7fdf95bd90bc74c88107eba51. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/UKB632400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9938bd403438b35f9e15677a0b4beaa784ec1f8c60e33ab1826462e612abbe. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/UKB632400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeee7f2fa2e3a3ddc7baabf0af6023d1bd0a9df6fdf11b8dfd198d323f07cd2f. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/UKB632300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c95c1f30076cb30ae73ecb340929ed12bac7653213a14723ec47cc3f964c747. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/UKB632300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabeb51a5ba2d53a10976631b8da172036925d5596b9aaf7cecb3d1bef61a1d7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKB632200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82444f6cca0737e3b58d7862d7fa8f68320145dd6d900161338443fe2e8ce4f6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKB632100007.