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 0x9be5f483c2e310e34ff8375c967b4ea55693a1b975b9023eb967d6c2d6ab7eb3. 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/a38ce67a-937f-4dea-9156-ab3dbcd07279.json and https://artists.proofprofile.net/proofs/artist/a38ce67a-937f-4dea-9156-ab3dbcd07279.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 0x87078a1d89c53f4fd25aac3a9e02cfa7e8e386f65dbdb22b97a07714bf417aac. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLGM11708946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81cc64e7e28bb505ab8a17207ad9517d75aeb56a3cf59c538ccc5512b49928b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/NLGM11708947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09587424d8ab31c8ad74e308808db26fb4b71b17a2ceb73853ac9454090672b4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/NLGM11708948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaed65cf44cbf883fc7587766e93fdea3ddddbd34dc9acebf95a0e9343317401. 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/NLGM11708949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed5ecc7321d5a257cd8d984b5ab824d47454b172bc36e874a18fce33698039e. 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/NLGM11708951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f24bf4002b735a09e66953807b018b86202b46cdf3a004d37b75477b158ecd. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NLGM11708952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6591ef1ee090d910940ead7cf9b1f041de0b49ecb86f3f395b1a27938f50da93. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/NLGM11708957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5564dcf7eb70bc9e134ae8583f9c618be7365a1577ad5c7f0af2c84ab7d2bf3a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLGM11708954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9a6493ef7d2a939a3ef4d3a8013396719519f9a1e9bb0cb291cba724c90d80. 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/NLGM11708956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0483aa17056ab90177d219d211705168bd950b00ddc9385e15fbab9b9ad2e4. 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/NLGM11709894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4af69402e8c41f7a2eb1b13a0c8810ed396536e59974337f59e64a1ef3a2b9c. 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/NLGM11709884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5360e0c9698adbbdc9c71e9a82ff72651097f77c3793289a4a454963ad0ed7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLGM11709886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767a3e300f5066129477af7b51cbc607818ab462ae3e0faea46674c105397235. 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/NLGM11709887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d66dfd96b48b19b58253afbaa52ecb07434d7d7eaccbb85448e7418536b35b2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NLGM11709888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37d2f4e487e94654f07769a7a591c2980158463a16a7f8adfc7104e37837a92. 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/NLGM11709893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c104a9879b0e21042b5654c29a283e39d44e76eb1a8fda63b6a8a29440757b. 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/NLGM11709890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3b4411df2f3fb38ca2b012b6aec4786d24b2008566a4594848af9d652af162. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLGM11709898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f531aedec6677f95825657ccddb4f9bef0b119d2fee4dfb589910dda703e14. 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/NLGM11709892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaae69ff7d2517a4f9adfd9ebf6d199dfb59719523f03a4ea8ad9406e2fcdeca. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/NLGM11709896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dc50bd844713751900ad7278bd0892007af057c793da531ff6e53d62fc6b9e. 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/NLGM11709895.
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