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 0x2f701403b396861e51003d531e4b812cdb2781eed57a03dc15efa3a194ad3d71. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4502c3d-2814-4a22-ae97-6ef3254ba9b1.json and https://artists.proofprofile.net/proofs/artist/c4502c3d-2814-4a22-ae97-6ef3254ba9b1.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 0x0eba4e90196ccb30c1009b22d6d5014ab46deca36046e2f78a0fae5e372381e8. 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/QM6P42010852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7444a96ebaef7364b37bade2739e9308eb081f418209430949ed81332c1795ad. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/QM6P42010850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ad89899f8a15634219cd58b8ea8afdab67ec92478ff24596682aaed17729d5. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:01:34Z), 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/QM6P42010853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5249004e60ebc479f9e16bc9b5bfa071fa4e95bfb990436f618b8e4529411f3a. 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/QM6P42010872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c80d42a1e13ccd1c874a2d4109b89c0395a2aa6c74f000778b50b026fc943cc. 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/QM4TX2194461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25646f331a1f3b91b8cc7284dcddee1498c2546d7361a92e9be3f6df0b93e665. 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/QM4TX2194463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22923ba1acda48e6b7b2e45ab28c257669d2133e065a8bd64d9536c1e1489c8. 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/QM4TX2194462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6ea2ada4a283a7402824fdbc6ef3d9ba5014336127f7f4c3631d1afd05af1e. 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/QM4TX2194464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a43777d6e77f25ac66fa63938834978607fd498336d9fb52b41fd2e4e3b915. 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/QM4TX2194466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8121061d4a0d5decded8a657c63c8f99b885d9bd1c5a7478eb71c722b71763. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM4TX2194467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0889bad40b6b7583149ee3ae564800ead625e0849c1e6abac661b25fb351720. 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/QM4TX2194468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eff9438a874a455843926d69d337aa7b66b824d920669d43d642e49067742b9. 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/QM4TX2194469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff4db38a72fb9d94c81545cdd98c4a049e2cacac04c94f6c5454cb76907ae13. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM4TX2194470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1bd35c0552fa7cdd73b77d2993174771791cd7a17f74b59650c9ff719b650b. 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/QM4TX2194471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5e669e30175f1c22da06d3a15bec4b9b1e6d7841c1787546e9465f331302bb. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QM4TX2194465.
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 0x80d77bea2e1e6c9e36dc826975088533cd0c7983d50d5e15e47cdf8c2b561a6b. 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/QM4TX2194472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1fc3761b6ce504a63f1cc38bb4e8ffe59a2a4dfbb8ad591c7430b6c4df42af. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/ARJAH2100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719e66b4425d2f89cc59bf41de64bd3a0c79e4d3ff988ac4b3db79248cf362ce. 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/QM6N22293866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f91e52f583e24bd037128cd1bcbdae58064d5cc7b03e83f472dd86fdd553159. 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/QM6N22293867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83829ee61093b1630ea48bd98d3a664826260d4addde7b8c8622ff26527947b9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:03:17Z), 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/QM6N22293868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de7b36329f523ad8b3176533db2ad1959cf737d6ffdc0f032c3e451d2800ad3. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:08:55Z), 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/QM6N22293869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be80a5c2d572493e1183ac31d80ba0fc8d278340b97bda98a6b283f4c097769. 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/QM4TW2327024.
Live Sessions Vol. 2 - Una Lágrima y un Beso (feat. MUNA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88aec315ee44e6250dc69ec37ec685288804f82b2cd0ea5e91bc5ca63abe2dad. 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/ARF102500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9bc89b23de861ff823d58e8148b32a654f80fe6958a90e929756125d977732. 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/ARF102500150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb672038c41f7994da28f57760a774830e50998e71cfe5afff9ce309e46978d4a. 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/AR16K2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9ba05d639a8397156be30be9b8f73e97f0ba245f84d4e3aa3058c6adbd1b68. 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/QMBZ92400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98e6ac1e88704fb9c1fdd96deb19d55888d0a22225cd5f21862004f136f87da. 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/QM7282461405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98e6ac1e88704fb9c1fdd96deb19d55888d0a22225cd5f21862004f136f87da. 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/QM7282461405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98e6ac1e88704fb9c1fdd96deb19d55888d0a22225cd5f21862004f136f87da. 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/QM7282461405.