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 0x66d3b2793019e1aae0b4a588eed6a2d59fabade7edff0917d43706e0187a7e91. 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/1e02c34b-79d7-4d02-a508-b39493910aee.json and https://artists.proofprofile.net/proofs/artist/1e02c34b-79d7-4d02-a508-b39493910aee.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 0xfdf235488e40b23f6731d2c7aeee7a56cf302971b27b0335a3ad0162135c6eaf. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBBZV8901393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcede99a52c6786b56087efce57f097c95e753e39f44cc86373d136f25c10256b. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/GBBZV0208037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e8690f39a6149037e42fcf45d9990b9e57e76181d41a86d1ce41a749feec7c. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/GBBZV9208744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e6eee3d8ce3567d9d696138ae9c1a18061f47e9412ae1e5fff0a809f01f7ac. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:27:11Z), 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/GBBZV8908716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b2c719c8b3df27603af6be1a076c05f8955e85c77270633ab0dec1d893f908. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:32Z), 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/GBBZV8904844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd402effcd21fbf9b522efc8fbb05d278f7a14e59aa50902ffa05fddc28790eef. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBBZV9204872.
Pirates' Anthem (Skull & Crossbones 12" Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f584bac2ae93ae6c55e029babf3b6bd21218cd0719c6614e4d7c0307922c090. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBBZV0227397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9b489f261ee2e0b11d9573b45346b00b457e6520e2205e7adc41f2f2e9a93a. 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/USQY50915695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb109a17be6a0c43cd33d9ca069392d68aa77f5570cd5c3adf5efcecfa768d97. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USVPR1100710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95054db8e310f5e6cfa89b3c220f517e433ff83b35e023187da8db16e381a59. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USVPR1100714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb16b7f0e5d5fa3e600ba3f27ad7660981cc3b7e3faac2cb623c8716fe3d30f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM4TX2570163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8ce985d861621cdcb1e151ad5f6734c0795af30a154ad2ecc5353d597840eb. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM4TX2570164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf17b46661315308a8ee5e4d23c2744e3caa7a0a6c96f3a02ca2f6cac581fd89. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QM4TX2570162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d0e2500d59296625e7099e2298bde2a6166c8927f6cbc2b6b8e1affe835d94. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM4TX2570155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a2b41fa44a3065106d28665e44e6fb97bef8aa8699077d693d6caccfebb0a9. 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/QM4TX2570156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d52f996084a331b11c2ff2ee17447401e0b5c3c4f78eba361c4a30422cea5e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QM4TX2570165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f03666849a980d3d5a818254b213103af850991832ea43284523c7a8a428ef. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QM4TX2570161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3396fdd5b162914a9d06f16421803027b1e1d5df12a89ce8b104daa42e0f9d33. 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/QM4TX2570159.
Total Reggae: Greensleeves 40th (1977-2017)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c38843d7874fa10025d961d3b685cb7d784ae8c4b615b96ce5ffb8d9690c54. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USVPR1700083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3a159afc68f4374b1d393ae85651ccdb0d8bcf5732a4ac3477e9a769c07918. 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/GBCMZ0500752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aba9c56ca7b900114b95dec51406beef475ef1d8b1b42643325a12b97a5c1eb. 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/USVPR1601007.
Reggae Anthology: King Jammy's Roots, Reality and Sleng Teng
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c7ee6222bdeee8a2e57d9443bf9d79cea4448acae5c894f1c5812eaa440157. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USVPR9200141.
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