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 0xbc65926d101ecaacb08ccf45cb0ca37739ef717a362495104c2c9d3ebd49cb0c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af164941-d4cf-4274-aac5-4167d7abd074.json and https://artists.proofprofile.net/proofs/artist/af164941-d4cf-4274-aac5-4167d7abd074.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 0x65179b5bdb222b7b197ba1b56b3f73e6459eb89e85ab31a0e053d3c2f83640d4. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:50:32Z), 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/USMEX1100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ea4409a2e327f2d6c703c6e98c50f2ab89875c9a3ebf42c2f041e882bd21c8. 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/SEUM71401149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cb6afb43f2bfee02976d80230845049ce439cab89af680e29ad345c5f8bee3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SEUM71401354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99147049c0629143d529e2457a2ac906472bc85a3f42da710e3f5434adc0904. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:40:12Z), 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/SEUM71401360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a42d70562a9933c01d24a2ec4c3b97f452e37a94d51684cfbad536f72e4112. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/SEUM71500838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ab67ac9cbaa7f4bd0ab5c5b5c52fc3f640d8219eb452e58aacce86387d954c. 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/SEUM71700882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0eb654e6cf4385ec63b26f078998781bcb30f7f0754e2d1ba41dd1dd5e4c8a. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/SEUM71700876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb002f0cc1488a50f81d62f0f032d8503e54c16761773cc92dd88ba640b966641. 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/SEUM71700880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0020ab1c9d808b5ab6a3e87d2fab59f2acd1069fa54b12b93b762e15a27d07b8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SEUM71700881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8b347b574cd1c064054ac54c05d7a58eb8195960efb9cac31b349674fc7b28. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:11:29Z), 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/SEVVF2401303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b32d4ac6c1460efdbc1c90a573dd34d75325e137a69279c7bc0aaa5e620a58b. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/SEVVF2401305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3163c3aaef9ceb2ac497330197a0315ccd9ffeeedddd9b5b124bb0534e730d29. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SEVVF2401307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcb2001eeb4320ee790804f1b1f1d1364e8bbe5e2d1e5a4a30eb48b5dbd2e83. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/SEVVF2401308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff058d93e5429bbc37522a4df64a2a390749090944692c1f040566cbc82f34f9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:08:34Z), 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/SEVVF2401309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b5920d640f5206ad9200670d11c7d6312f3a48be32521c178003e3c5463c96. 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/SEVVF2401311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72936e2693bf42119836abd65d258a2a3298e41587bff6aad6b91cd505312577. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE4RG2287101.
Street Corner Symphonies - The Complete Story of Doo Wop, Vol. 6: 1954
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f480c6ddb55f8c685d39871e306a9626a825ae9f492442ec9ff19e52b00ddc1. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEC531240169.
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 0x37e33e0cdd3a53e73ff653dece0eea3cfc936c696cea680703bc09907a29c55f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USCWY1800295.