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 0x69806efee7b7d1024aa24f8d0862457dc639536dd70f61ea5bcba22e4138282f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51297e1c-40d3-4657-8b06-a659b9b1f5b0.json and https://artists.proofprofile.net/proofs/artist/51297e1c-40d3-4657-8b06-a659b9b1f5b0.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 0xb169a20b23cdb1b92af47f508ad69642ddb5f9dea48c5e852c84136164217f90. 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/PLV651900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf845636b3c7b8dfb646932c686b5cc57adf0ac6623364673d2b780f698a1230. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLV651900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0caaad6be481ae74e90a97ab51d6ebe7fcc6ae18c150e0c644bc87eb93645937. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/PLV651900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95dcc0d9937036f4306c127a1203188ef2eb1ff2ca337099a480ed215acf344. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:43:44Z), 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/PLV651900006.
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 0xec60f23e39c4f11c0083ca1bca987453ba0c7a8267eebab5f3a25f832a8c680a. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/PLV651900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980027da2f9c478a2ece41e833ae7baf6c6712c10ba4c6410920072cea3ffb73. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/PLV651900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9742cb26a8505fbd5fbf2085b1ae4f64b606d84d70ed36384d2c60c37fed87. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/PLV651900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360146ec62d1bf8af329630396febf556c681c8ea84f3842e73bd6384431e1ef. 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/PLV651900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d4e01d3c4e05e20407d2375fda7df04e611352b10c53e966280df8a10ca455. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/PLV651900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e72c53def3e2c407511da92f1b1428b3430d842b5f3bd24419df4e84f6b70d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLV651700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd344c9483c9329f03ead1f23c8e40e52a2ab8c092fdd88ecffdd93c2043b632e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLV651700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fd47b5ff948652f3bc2cdf6b302dfb8201d4a157a321d4f3c0318665e4023c. 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/PLV651700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cf1e674068dc3ec607bcb939a68d87f0b8f61658b4f3265418e6478085f9d9. 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/PLV651700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667626b4aa5fded1cb1560dce090f6eb8f81ea2a4bc0e8a9ef5453fc11d9986e. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/PLV651700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f6cb95a004cc38834d1a8f1be8129a88668195f6b172482c20d56871c16507. 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/USHM91030036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc783315e2c722f9349db8bd92d2b3ece6164f6e2840cc50e21012b9a204292fa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM91030037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b10a59211ef7ce116f1b782acb138cd760ef6c5b201ea27432203c79e2179f0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM91030038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6dfc18d16b0ebc74157e8c2d58b87adbcd1282f1fa5efcf7c20d31e74c4b43. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM91030043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121eff7424a68bf4f1f977702d6e5f6c34fe9796466ba4caae7a425d8b07426f. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USHM91030034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06eb867f7bbf224ee3fe068c354c3a78a5abc7ead6d58fb8e7eeea34d1703dfb. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/USHM91030035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a6ed659697afaafae314b66a14bbce96e23a47cea7dc36a3db5051e9f1a518. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM91030039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0757a4ae205793859055d80c26b26c7461f39f62c193373a1508055583396686. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USHM91030040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d519b5b3c8dec1670c9b952190e09a4819f1bf90976ea3a1346a8b6368a8c4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USHM91030041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2478e96c554a15ab01d94842fe4ffe79a2ab383850970bcb9387edc274362ed3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USHM91030042.
Goodbye My Joy (feat. Markus Stockhausen)