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 0x4dd2d4599ab972d7ee26667f619886f3db41f132be2c8db054f5aef6aa523ad0. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6975cf5-c911-4b74-9774-7e8bfd79b65c.json and https://artists.proofprofile.net/proofs/artist/c6975cf5-c911-4b74-9774-7e8bfd79b65c.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 0x934cbf550a01be4d8e5c90889a135c121f77444e10ff955e173b3147855895fa. 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/QM3DF2366828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8166aa9cd92b968142bc5153a1456bb0ff9f0d522afaf7ca3c59aa608cf39dd. 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/QM3DF2274080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dba2d390685571708402db76dcd9e02fad37e7ceeb84316989a3ef9e0c2ad3. 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/QM3DF2273491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb217254f1aae728f0a3eb4836de7b781767773f7d41a89b53cd1d1756f58c88e. 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/QM3DF2201025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66529c69e2572fc59bb2e90b968ee2869193d94adb62696a3954a3d0ae285141. 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/QM3DF2201032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf08f820c6743be56d0e427aed78b21e10bfb6c3a4e8747aa46a38fbd358ab3. 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/QM3DF2201034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d8f037af8902dacaafaabd35f88791072a0dd748e316e748434133ed85cb9c. 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/QM3DF2201027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2007784c360d00ab2c9e648001fb3d7271113fd6d87b5ecc139cd36d009a4004. 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/QM3DF2201038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa401bf8bef3d977d3ed89aa1c8858ec278584c8303ac384d211b51c30c5f63. 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/QM3DF2201029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020bb8be2d4edfdb8f914566c904225f49fcffd396a7c4f526b44e029e18e664. 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/QM3DF2201033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29e15a493d8197ba0246f0afb4fe6aeacf00d37bf5513cddcc20636af30a92b. 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/QM3DF2201028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237323452b5678b77d48546af436b806dac2c94455860559371c969c4f8fba7f. 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/QM3DF2201036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b811d759d02252892668a3f51143be8f3db4077bd42eb578c90f082a56ee8c. 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/QM3DF2201026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65a7b1f59242282afbc4bb27fc0689b53c48cbf4d3e85eb6b0c887afcacb23d. 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/QM3DF2201030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e35f96e824ac83476c3a60953ff0d14c07deeef8471d2d052cb269aaa2e0fa. 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/QM3DF2201037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef364c2474ce45baf0c0e604d5beb2180969eb67bf8ec60b8b957011525fc9d. 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/QM3DF2201031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0525e05060411c6f598595c312525dcb8671e08c446db9041d344e620b9fd6d. 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/QM3DF2201039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fea1bba0ba008a5208e3f42bedbb72ff3650e3b9d1edfc4a168cc0181a025d. 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/US3DF2413899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8200696f6b1b115b0cdb4361ccf128d32cea84675cb2ac750d5c4ed5532cf601. 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/US3DF2413900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a610e9e8608690f079dd64b70315a06a76243231f0c002b23794f5969db9e5a. 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/US3DF2413901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6548611f81675143723ad766606d0fc0a0dc7d0127f5817c84a7dde17ebc98af. 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/US3DF2413902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9957d49e82ed047ed21dcc28edc18b0e907b0ed1dcf66a5253c1116c6bdf210. 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/US3DF2413903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7050cf5993682c80c44ccb46f502fefa2d76cb09b86ab2d6e40ac32fd108aaf. 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/US3DF2413894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bc931c0178a8cad243739140edf0fbca3fe10a6cb2d83904b4f0a7743b948a. 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/US3DF2413895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3338dcd669e0bcc95929b0dc9aff29087526a858ddf4da58756e43ab3672930. 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/US3DF2413896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96b09e773bd1e8853581a4d8b918ec0c961268c1be5b79eda21633a41679046. 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/US3DF2413897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d42a5b97dca7127947f60c797784af999292244008bebf1a7da766435637e0. 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/US3DF2413898.