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 0xee06e1641f209cebdb2b74ff16f678b6f2ecb8b86b3f425d8c16ec593a836be1. 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/cac05450-286b-4007-a461-dd8ab5b3fb78.json and https://artists.proofprofile.net/proofs/artist/cac05450-286b-4007-a461-dd8ab5b3fb78.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 0xeb30472ccbebda44e78466012ec076c0f68372799618f843b3f38f39e6331c3b. 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/TCAFB2092047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afd293b7ff9bb367eea25d803a862d6c689ea274d72c25428d8ea5cf2df15bb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAFB2092059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43146fb60918f6c4441ebae885799a68ac8061d87a9bcf991760aa2d3b3bdbfb. 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/TCAFB2092069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e80dc23d19a45bf251fa5e96075f43423f53e830c67321709bd9919097fade. 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/TCAFB2092082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461c5b64423a4a15aa17daae99e02921cfbcf4b28f0c209804b714ea54774b81. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFB2092089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2697394d99200d2e9e014a7e0d1fd9018f4b4cd3c34bdc013de76af454ee7f82. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAFB2092102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0215c845272f8a47611e85a468d82ae465e142cb56bb7735c083dfdb05d9c4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFB2092106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abc7c36c3debc5d5f0bc9e1e70fa8fbe6dc7cc373b289af1c17f2be47629c7a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAFB2092118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe143322b6515a65eaa2f34ff97750c3a1d817424b0409fa1b3275069e84416. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFB2092124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a72639fe2db9929760de9c07cdebd0f43c52f4be7e18f6aabfebd68a8839a3f. 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/GB45A2102621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060565a6018a4d8131caed9beaa4b08edc36ff3e2b8bf8c64ac1c1c4662ed070. 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/GB5P52300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45577a1ba5af5ec541cc9441214c6bd9574da6000bb87f805376ddc6bdddeda. 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/CH8092001413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa55482e657b5e3d3bb1e7c4640ca64f79cf4955986bdf9a99aa58df4c428aa5. 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/GB2LD2410254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c634a2b43c97830d454346a73c374bfffafa99e51760fdd061af91737b6ef7c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USEP42069003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060565a6018a4d8131caed9beaa4b08edc36ff3e2b8bf8c64ac1c1c4662ed070. 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/GB5P52300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e63f3dd33119a6fa934679b1f1d946e5f76a614fe28ef15a638157c00a7ec3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBPW2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a72639fe2db9929760de9c07cdebd0f43c52f4be7e18f6aabfebd68a8839a3f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB45A2102621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc27d559c26b6f9f75bd04ba30e555f3b56836afdef2a73ac51574460d25a091. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEGC62002350.