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 0x2a75e26a58d8275351d76709b498279d51c666886f8daad0de331cf28e47af34. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ba3701e-3b5b-4715-ad68-59135ab661b2.json and https://artists.proofprofile.net/proofs/artist/2ba3701e-3b5b-4715-ad68-59135ab661b2.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 0x9728992d2f70d0974892a5471625754757ddcaf7ef25ca5489455f1f76f3c94c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM4TW2077673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3e5f494636a1e351984a7029d5455da8492b8eb1449ea050d927ac78ecb407. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/MYLG11400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11599c83c35b719f0479859ecd4ca150070146600608c72441c49b0141acee9b. 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/MYLG11400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f73ffafe857bc5c49e5fe1417087626ced33ecc548476a6254741cd336ab1b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/MYLG11400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d62db59a182f51fc11144b4fd6b0a279cc8b95352622d5fef76e6d2b76cdedc. 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/MYLG11400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace0dbbeed0504ea3d17b254b94186a050accf230bf8f830dec2d3fea2632071. 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/MYLG11400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816c75a9a8fbdec6e169c5b4d12035a845e0200f850286ef5f3c5d03348ceba4. 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/MYLG11400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe461a7af60f45d9cf59cc7cc52064b4a048f78966d12dd0bc31058b7823ef957. 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/MYLG11400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55475210e6b27f94359b77d043a5bd0436c4b12a263264cff0054f5114ac5845. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MYLG11400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02dba1ab2c47964ade48f4e1fa2f311924e236194534e45122b42bf8aed57f8. 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/MYLG11400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72166fad5f8b181ea73170062a980bc5974ea50573a9ac2de23e076c6f21e93. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYLG11400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85370b5557c874e5dd11d76f854114244ddcd2b2b6193c9da7377ba2a2abf4d1. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/MYLG11400017.
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 0x52f7eae2de852e7c0f8751c019a0aac1ab60df3f9512077a3ecb3be56f48d334. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USX9P2003737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f3463b92d0e4a062a36a131201415db56fbed238391e8656039e25c75feccf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USHM92066505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0fe22b7a5a1302bc376d55f3ae064d5071c3b0148426f5c947908146b7ee81. 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/USHM92066506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc704c9e6775148ed58f111a7ebf7bd5902c6093a587552ddd81caee2f2a293. 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/USHM92066507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412e53c3565fc90edff48fb08da5cfcf7be7ebc0c57bdd1c786c023de12e07e9. 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/USHM92066509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a3ce0b8feffb736fcd8fb66f779ee63d59814c71f270086333efe3426986d5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USHM92066504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7cc0cb51c7d834d687915e51852f916c5168cc72e5ad811fad6775be66c763. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USHM92066508.
If I Told You This Was Real, Would You Believe Me?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a830d75cf6d430825f31cafe04c12fe07942ec502648a90f45935acb7b1e04. 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/TCACD1573007.