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 0x94e743094136f69a596db9302af49fa442fa0244019e1d861e72a1998b5a7e73. 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/71d9b070-3fc2-484e-91e5-dd7529aa4eb3.json and https://artists.proofprofile.net/proofs/artist/71d9b070-3fc2-484e-91e5-dd7529aa4eb3.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 0x3fa9d3d72d9b708e03a1f779f86bbbd53c67a68cfd841ca6d7496b99a2ee5cd2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IND301900118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b7d533aedc5662a7e1766882bd7a4fac7a3f5671842eb30856f48670114051. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:17:25Z), 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/IND302000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a6b6bf04b10c191f342bb7bc93d4187d9973939c1dfe2e46a4ff7a75524a8f. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/ZA41S2014093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf713af0f96fef326f77879a969fab239f7d567654f8601c0a732c3b6e71b08f. 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/INV772000337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3b3684a7e5532605192a53f5e90299966b537c41b712cce5b029264298c948. 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/INA1I2103407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef69c45b3fd6945d1d3e4a64b8d0126848076d09982f67a2574c0c1043aedea. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T07:55:22Z), 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/INN172110040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe943ba359876ac4bc3381c14f48ca6ade734326ddc54aa3d92e577a0faba4e89. 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/FRX762164337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14ec7b61340c38eb2be10b3dfd50afcc1e52a0ea4501ba8559a34dd1c933240. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/INN172210017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14ec7b61340c38eb2be10b3dfd50afcc1e52a0ea4501ba8559a34dd1c933240. 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/INN172210017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28e90c50e3916ec095d0d6c968891eaa8b21af3399d69633dfd728f51ae4314. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/INSD11914650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89caa28d1300b73bdb0fe2ab6ba5940e527b9850798e8fa648aca42cab651ed. 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/FR59R2322672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99c8a6274e360298ee71b4360dca17c98454b73e49c430c2efa41999428de8f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DGA0M2323201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f15d90dd8b58322192b02f3c41564b055a8dc49a2d1e6eb93de3735c686b54. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/FRX452405395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9710f8d5310320cae6699c81341245b8fbd209a5fee6a9696784dec8b1978b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/INS182400497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3269933b463f51d9c6f5cf442702824ed015863df25d1dffe662fafb11baa6f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/INSD11947404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3269933b463f51d9c6f5cf442702824ed015863df25d1dffe662fafb11baa6f. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/INSD11947404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0a3ef3bbf69c8426d562fb0b8fb61a6203e8da7b1e496b90fbdd52ed72c3f1. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:54:40Z), 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/INSD11947413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b67bde7c907cdbcd473f6594a18c368bfcac49a3d22d711ecd74f5c53ebad5a. 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/INB942515680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c45fff95aa8a8a70007a3b62f954c4f7fa60f41284d64a774acd83e79320e9a. 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/ING642509180.