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 0x9d7973c212090c454ad7d24bc934e7ca8c039143492b1c6cc600dad52de660ee. 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/327f1594-951f-4dc8-951e-3f79f1f5171c.json and https://artists.proofprofile.net/proofs/artist/327f1594-951f-4dc8-951e-3f79f1f5171c.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 0x32b41f4849d3b1bf77b1b88d81bab5ebd694b82e397671a51905eb92b156297b. 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/QM24S2001311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60197c928423b14fb3b590556074dbc9ac7555a2d01089993b61842f30b63a54. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QM24S2005419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4629ac986fee2561b5b9f3d8e4e3cb9c1c7275ad0b0b0807bb4cb64039969c. 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/QM24S2008502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298425d5d9816ae56236c76948b8a150bc97134da11dcdedfc76ad94ee9474c8. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QM24S2008525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd518cb9baec47f5442ff50f99bf42022afd716c8efe71588260a783a2ab7f2cf. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:10:02Z), 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/QM24S2008526.
All I Want For Christmas Is You (Sad Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d831f5506d542eeade6d388a32e1332f094ee120e3f194bd28de0bfb0cabbd0. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QM24S2106767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679ea5defaa13f706d1e5df0d87c7a04ac6f8df41106587f024257b61b9daef2. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM24S2106774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbeecfc8790e300a91c3034c9fc6782d37a6064cad6c394fafabc766970e0d8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM24S2106789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141be52290afa6552b04b6987ed9ad994f351fc84be8ddcaff36402298499833. 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/QM24S2106792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8baa00e472ad0db361aee478d3266267d5d04c9cdf71a68813c0f46f22e74c. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QM24S2201367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf86ce11c327e58762956e8e2e6341cfc3710a1bd76d18796226f532c67d7350. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM24S2201488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930234160eb9e4cd3e21e15d7b9641553b9229a0b0703e631afc855881d3d41f. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QM24S2204055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b31102b30aa0548fdc76050e8922e0de77964c2a5978fb3c5a88e65187150ce. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QM24S2205813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eff1036fac2f6e4804faa9e51f44ffed8c1f70afc76660c5f90b42746de026. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:24:10Z), 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/QM24S2300599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e08406bc6fcbeecb4b9d10ed9e40f65aada0c0fc48d95c5e36c8304954659e0. 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/QM24S2302090.