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 0x595abdae9c34ac9b612abfd581787757b9ba5b8cc3ef2fa0502105d09915d25e. 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/79698cad-a74c-4c12-b557-c8fd0b974c16.json and https://artists.proofprofile.net/proofs/artist/79698cad-a74c-4c12-b557-c8fd0b974c16.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 0xed1417b4af133c55379ca05461d00287480120ce3a3f0c0c06de36591d643fed. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/NOL862215010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5f9ad336a64c880b5e87025ad95b22ddb4de29f0b43c0ca9c931eea93c67bc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:27Z), 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/NOL862215030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb095d737e2d15c75648ae664ae6b02151a67cbc00311f87cda0b5cbcecaaaa. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NOL862215040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d8b79819bc8a576271334c981a5843e7af0e89a11b739d48208a82dbbb55e1. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:58:03Z), 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/NOL862215060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18b634656a44644c7cef5a46ce5c8459e063ba8a665ebf88c0662de43acd41f. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:41:19Z), 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/NOL862313030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864e4bc61c03e3756ef97f96a89b3d4eb39000c44ee4dc5c0bdf3a7854c0c0ae. 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/NOKMO2301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ddc05f3e6ca9a180a85b7216f7b10c5efeaa4a02668c8187f71665a7741a45. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:43:19Z), 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/NOKMO2301040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2921f36ed681a4d9e7e073484aa25f36d70bd29def27548c1268b79bad38aba6. 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/NOKMO2301060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b056e48d3fbd0051250d4cd29fe7af9e8432f3d459f0f6c7c338d936a9c9da. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NOKMO2301020.
Pilgrim (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c2335a5757a1df3e03652bc0674b106eefaefb367b23c57907bb7b7cb820d1. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/NOKMO2404070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962ee880d1c72654fae7bfdd5ef6581e5db05735cc9d9202677801f08a0552f1. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/NOKMO2405030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559aabbfe59e3d9f6fee212a98faa7397a37d08f374fa801e3f15a3a56866f83. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NOKMO2501010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962ee880d1c72654fae7bfdd5ef6581e5db05735cc9d9202677801f08a0552f1. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/NOKMO2405030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce41d4439ac0e99ba7325546c23124540d1dc1c476d33f5edd03b353ad482184. 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/DEPI82451803.