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 0xcb594522897cf22e4e2c4f766facaec9723cccea4e05284da989aeb1eb837b4d. 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/338c4ce5-203a-44dc-b908-543c866d5fc9.json and https://artists.proofprofile.net/proofs/artist/338c4ce5-203a-44dc-b908-543c866d5fc9.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 0xd2d59dbbf72784f8a4878d7954f1f39edeb92a3348837c6457bc303af77966f8. 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/CASD10600776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb134ecc7642c9a66c256d66099c9bf22a94b4de913a179e16d08ab494a7c12. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/CASD10600777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3566475bd6da0620517fb94da22def437ea9664287fc4ac768dda908669e07. 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/CASD10600778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc4588d46e2986c115d55b7e4dd5a4c508d667771e9d389767cbbf35767721f. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/CASD10600779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1ae85bd7a17a67c7df03d571fc4a843121ce98dcc3b807234dfdc4d65b993a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CASD10600780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8908517289149d35223d6f963c21b1678fd472819505e26825b8b1ce70d96a5e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CASD10600781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e5d55dd7f06fa6ac942ca2013cc97d5b01718d4f080a4df2912fe91a9728c4. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/CASD10600782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3397b284f81986a667bba676be92580d762b33e277bd47db7f5d72153e90385. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/CASD10600783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22d12b59a5a61b31e5be8eaa435a9a792519808b62b1cd2c0adf0daefe1e2fb. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/CASD10600784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db95f62af3ec290c09f43cff993403c6f24b148a68b9f21f803e67db93b854a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CASD10600785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bcb355e33420fc61a67f93d5c75f58efc6a9d41735dd75e0548b7b757be788. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CASD10603120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22616cf400a975e3f22eb037c0544affa1f1208674de7fc78284823f721c61dd. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/CASD10603122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79787a44cfeff52fd805c88cb391ae19c685e0dc91874b1f4a1495cc96de1500. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CASD10603123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310b82cffa62c1c0282d812f86aa482567a5e37fac7a92418345bfda229b825f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CASD10603124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd401be0f1fdfadec0c049791cf63aa7311f3220168a033665c7eff7ee7e5b5d2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CASD10603125.
The Passion Of The Christ - Original Motion Picture Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4cf4c1ec5eeb88e0692ff4c4965df42036edddb7e28a11770f1c063750886f. 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/USSM10400943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c5f6604cfc2abb7e2ea4d623807b499f2c95e52d8ca15139c6084597f216f6. 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/USSM10400929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c4787c553b366b95a13bf60e778bc1c816f089cc6aa7e6ba5685b51df9ead9. 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/USSM10400930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e08c2fc1ed6e03ca0b2266601318f32a1de4bb81f8c4b801bc204b899525a3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM10400931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb137e68ddaa03d5a4a1b1b40f3a1732510600250252169c609a27d6f48293e. 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/USSM10400932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098473117f145293b85d25a96835143fffd31b50341bac4cc39bd399dea370a7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM10400933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0facfe5ab9f3f005ab7ef5f111cc72352061fcfbacf88d7825cff471b844de. 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/USSM10400934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be12a2366d2f50109176a9108116d5fd17ce7a298e655b52dfdc4eadb1f9961. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM10400935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06f23d9e3d5dec61789201f49ba9d23e2a981ec3103a6771a11191458b3c24c. 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/USSM10400936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9cbf90707b01c12a796ab7759f7745d797c6a2f9ee68f199395ecc720fae7e. 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/USSM10400937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c2005749594fb2f04ad1235e16772d98dde0c501269262ea27a4eaabf33942. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM10400938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201e049a7a01e1c9402769689b8a47d401ed9b8a029fc87e387e52df9cf2e8c7. 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/USSM10400939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e005e0fc04f7c0674809f9717ff557b20d57ebfdbbff18ab4d25c8e62ed16b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM10400940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c02845247df627cfa20cead813e6c9dde76457f1a6c3525d7ed6c719ca2470. 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/USSM10400941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb044224cfba6ad776040dc3abde29e09ddcc4d944838e30fca689df6878dc59f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM10400942.