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 0x4bcd4fcf7baa60321d8118727ea534040b240f45520bb15d34e05b1a643a746f. 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/04c75d81-3a7b-4348-b413-caf2f6af8148.json and https://artists.proofprofile.net/proofs/artist/04c75d81-3a7b-4348-b413-caf2f6af8148.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 0x1bfd243f7a7d969e7ee6b83cfb13e7124ba7860c3d2e362363973781104a03dd. 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/USA560783689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a23470c78f56bc4f695a524d8e9a54b84d786ec3fe49857882499933ccd408. 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/USA560783690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3272eed54511cf998c121e72c224650240a5d3980398852c050445c0916c2c0. 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/USA560783691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4b28c82480a5522c6358234bc335cc2f681c964275e29b04b339aa40d60856. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USA560783692.
I've Got The Joy, Joy, Joy Down In My Heart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea19664944cb4b3ede8f027850e2c9e1dacc0096247e1be73c019acd82f6ec1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:35:31Z), 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/USA560783694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ba2ca87c13fc25d6225623403d910548558adad5d60b10e39e3724153e059d. 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/USA560783695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20574b2e9e085d0bd53cc32b6840a311c1b93fa71028077ad03e41a48d8dce73. 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/USA560783698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e59cc6506eaec9945a3d279f4167feaacbbd307c5d9a120306f340c3fb5edc0. 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/USA560783701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20727c21aaac4ee3bb7345918e686ebd0c951b1aa1a8990f3f5828c8e6ad5243. 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/USA560783702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32f47bd3ac87c7f1bdb0205f998fc52d48d42ba6f9b2b7c7ae34d1b2fb0d1be. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USA560783708.
Praise Him, Praise Him, All Ye Little Children
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048bc449c55887bfb893ae6904c3061e0888273bf1eefceb86fcf1cf2ee64e63. 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/USA560783717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4ff67e142d50994761122e57e7f377c097e7b1aa556bb232c4eab54e4d3b6a. 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/USA560783719.
It's Me O Lord, Standing In The Need Of Prayer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9950f2655bd9bfb4a080e46a18bc4b9e2338cdcf7e66007b14d29fa04abcccaa. 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/USA560783730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021b082b03158826c9900100e133faef0fc791c8d5a56e2909a265f9ffb8034c. 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/USA560783733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e635cbdb6d9557631fbb829cf5024573a0b915aba39ad7cf80f42ec1b8305d1. 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/USA560783746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814889f70f99f517ac12dccc6f59c1cdfd84d5e13da017386089dc87fe42dc86. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USA560783754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083fb13b041fb1b96c8bfe79a4b1f1e25dde34cf7ac97f717ddb6cbc6abd73b1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:41:16Z), 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/USA560783770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5a75d7105e2b62c26119e9852ba8d728e34d206c39eade29174b65169cc786. 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/UK6ZW1409186.