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 0x3ac191e668de52eb05f8f2cc720db5b059e2b3003b1304f553c0b454887dce05. 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/08a30355-8ad8-4fdb-8187-c10c8fe2034f.json and https://artists.proofprofile.net/proofs/artist/08a30355-8ad8-4fdb-8187-c10c8fe2034f.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 0xe1ded84460d725d5be55f1efa56f2d64eec588ccda19c4d09b0d1afeb8c4fc52. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCACP1600667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d0a11953d65c8a0418d91d38baffc507af445ee7b8957da959f1330fa8ada2. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCAFB2062341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb459a98bc77dfcda5c91262726cb8746c73abef21d3dc19de895dbaf7279cb9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAFE2054877.
Kingdom Hearts After Battle Piano Collections
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b6b1b3e6c999dabda1427d5ab64895beae7bef601d20ec29198829c68b1927. 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/TCAFL2161306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde2164368f29b6da431e0ba874dc109d4938b5b1bdc4ea70f403ecde50fac29. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAFL2161323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b5670b2e8f97f7bd249f0f7ec2f1455aaa8a4220772bb46001a6b1f0e42107. 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/TCAFL2161325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fb0b90211cb726e9184bd40733359433679cbf21a9152a9a332ed45fd1c15c. 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/TCAFL2161330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2dd06270bbb243f7a68f66bcdf84bac6efa17f2945bc78facb9a95ac85f0ae. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAFZ2281304.
We Don't Talk About Bruno (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa675c7e293bf3003bc03e7e8399395c57282535749cbdb114a6eb3c10a9b3fe8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAFZ2281308.
Final Fantasy the Calm Piano Collections
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2ccedda8d580ee0085872f92d808f5057fd1c0f0a4a7819156f3f5098b03a4. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/TCAGB2296631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f48eb35f706495d02cb80a8e9e662310dbec0acf01664afd07b35938228ef1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAGB2296637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb612d0e28121bb9899a2a333ad762d136a06f87ad8bf3ae0a5f45de093d1cb71. 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/TCAGB2296645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ad3b1cf381312b039d25128e69ec597905b13e02029dfd25eaf63edffdf20f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:36:38Z), 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/TCAGB2296652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e1c4301b30698c977e5140e31705c6c1f6df5f384e6019fdb09aea83d6ca9e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAGB2296665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971bd48f138bf7664309493ebc2039f92c33f237c68c838e6beba62ae0284120. 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/TCAGB2296700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a39e793838cf7d1f9d3b943ca9ce80c1e58e4d7682f89b15899fe672f38a6c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:59:35Z), 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/TCAGB2296709.
A Million Miles Away (Piano and String Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f0a686772d44925e4c2da47057ef885a2892e37e15e6112546de50ce6a9c91. 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/TCAGJ2222987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711b242d9df8182c82189af3d506e9ef4f83b12b64c3f647d32d8022a792e46c. 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/TCAGJ2228816.
Exist for Love (Piano and String Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a85769f39161edd1e94569a31f1a2af482d495e4c906846129d889f0492728. Chain 2 (Bitcoin): anchored in block 957622 (2026-07-11T22:55:42Z), 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/TCAGJ2228869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb887bb62d1df31980b52eed95886fcd830a9f30d081e562415899b78cecb9b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAHA2308564.
We Can't Be Friends (Wait for Your Love) [Piano & String Version]
No Promises to Keep (Piano & String Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe051ad21f298da2f29d75752280f0bef0845f1855740608cf0de79d50f9fbb7c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAJE2518845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5e8bd749fe70a019c6b80c4cc85b8decef5f10f26144b294442fdac02ffa12. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAJF2541281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ac962fefdc9fa644fa14749799ef047882f23915aef2c982c613e867eb3df3. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCAJN2531183.