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 0xf4d59563478aea36e423c1afe2f5d59ce8ca81b16b68acaaf31179eb3ae86e52. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48df440c-612b-4ded-8229-ab8e1e180c60.json and https://artists.proofprofile.net/proofs/artist/48df440c-612b-4ded-8229-ab8e1e180c60.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 0x8fe154f320f53186e4f2c8c31412c8c19232e5970d87a46c8f39194331dc7408. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USCGJ2545164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5abbb6cc6952e3e81b7fc2e20feb8ee854dd1a8339fb72d74565e05ff6eaa23. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCGJ2545165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db9cf865ab5bb77d87423a154cf76032fa693b6237cea4111ce655a795fcaee. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCGJ2545166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cbd8e45ccb01072b8baf3c260a13b385d654a00c5c622e7155231644671bc7. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCGJ2545167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae41e69aa17681ac164b98a98f653f9481c44b1611676909465eb7bb66058f11. 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/USCGJ2545168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b8f32ec1f8b779227856c3e3f56e6a30428394eac5e38f1fc196583a0754a1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCGJ2545169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a025b80af9d6d23a9647555f9f8c43084cf63284833598734f335821b648a26. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCGJ2545170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf070491489b86dbd0bc1ccf38f0002de6d4cf96522e123e8e76c2b2314041b82. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USCGJ2545171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e62641db031f68e4d742819080f025c0e1493500b4661f609574697d47a033. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCGJ2545172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363767ca46b9d94d069568e8c34798e9627d76760183150051e4c8a859c82785. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCGJ2545173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccf832182afbc973b3f71bf14f25c4fd23009df0ffed13c3597ced38a1e5924. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USCGJ2545174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7e035e00ea61a03b5c782b2a42084c1b4e6b34a30354c6dba7e9049fdab3e2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ2545175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa674ca4531d10635cae67474a6d276b43c234d5a9a34950e7f9f3a23e5bf96e4. 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/USCGJ2545176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a0dd60b63bb91fb9d446a7576a2ffee395cfc828b7dc069e1b2d561a515cc8. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/USCGJ2548131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0a68bcb14ed2a2f1786d7c90c84c93671e7614ad5824cd1c5a37aec854ba32. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USCGJ2548132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684a81e4afb74688d36afcc432611acfa2e77677adc03beff453d02580bb1f87. 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/USCGJ2548133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8dca30f169ebf70e1291567c482868034323ca2099c38a82eb67b93c063cb4. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/USCGJ2548134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af5a9c63ad01cec2d1bebb1fb064f7320263f02ffbc7d6fb1643278ae3944d0. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USCGJ2548135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e2e5d5912e068cc8268036d68458da7f14f90d0eb9b92bfeec5fa8f2090711. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USCGJ2548136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0468b140f8dec4d0ac814124e4abfa908892518169f5f7276bb3b23482a54e7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USCGJ2548137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9618760aa5f84279b662ad15d1f0a1d0e5b08f894aff68409ecf29035f436e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGJ2548138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5f2ae75243225c66c5d9524534855f0e180c80ac280b73b9578fa3c89c267b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGJ2548139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8d6613d8cb276cd672c63eaff718952062950a051ade7710cd023379e8d1b5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGJ2548140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c07d2748e3dcc52b3a828364d2c82e5039fcf76cfff7fbe2622052b569438a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USCGJ2548141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf196182ca4b6ead16b2d66769a643ac4de6133f8800e59de094cc12aa144cec6. 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/USCGJ2548142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd344ee1499c9197ec98549f11b54fc8b5b5367738c835561158ff1fdc996c35. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGJ2548143.