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 0xf54b13c8f8a8bac9a0a8b93ac79574238eac4103f202b6b240f6831c94faf654. 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/a80d164d-ebf7-4574-bc9f-1a243e14ec4f.json and https://artists.proofprofile.net/proofs/artist/a80d164d-ebf7-4574-bc9f-1a243e14ec4f.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 0x90d0e785bc01c9ba66c94cdb68914d4191b64bb1c365c54f80c19b1508d3f79c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UKR6V2235866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc93734c42f68ecfdc918299a033ecabdfae7aa826d9dd47fad72f77ce32c2f. 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/DGA052224624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a785da1f89fadec431f7af828376d4e12b6adc2e3ae51ec96059b07e928517. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GB8KE2215380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7b7368a05a380315e81afe3e495f04cbbf2ff719853e28a78e381611ac6093. 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/GB8KE2302027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d05618d2306dd0674d2004b8deb6e3e85e84eaa39f2c35122fbd8c7affd090. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GB8KE2303781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f96e6e4eb74a76db721c18efe83656d85d3e6faea62df15d31f9e84df1055a8. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GB8KE2312092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720c7e29b4dc0142896cb31fdce5f587d7263cd60871e345ca982e8b05a4a049. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DGA052376994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999cc76ada2ef3f8ee425fbaea72c7428fa2e190cb6f7c5f9b94e7391e3ded71. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CA5KR2398262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866f5a99df1774d23e546e035bd3d7342864198e4fb1b878d1dc389144e122a3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM4TX2411024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04c0bcd3669e30fd1ee0f3728e602d64a56cc186b40689bd040bdee0a2bd775. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GB8KE2214287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870f2cc0abeff0a0e803f3b80d7a7ab29e7bda1ada867a3237421fde848952dd. 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/QMDA72424374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb2c4f534715f1648905761e497c53a4f1f8086271b115542276ab9bd3103ff. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:59Z), 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/TCAJJ2501723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c1ae0bd7477064bae55e660d1006bcf0a3997c323a5d707d79b36a1d5d7f00. 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/FR59R2500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71eb9af9c828f83bea10ffdd702f7310978ab6f2c4937c9af2f91ee07b890aa6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR59R2500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc6e85465402d0881608a7d582d3acca38531b10b01d6c2ecca40adf3d2043a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:37:14Z), 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/FR59R2500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009eef8dd20659ca73c9967ba0e9acb20834079dee33536baff2881e2b739239. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6N22570521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8631998b516c4e42f43d6de9cea9a7a8b4807c4f37294845de5375f46c468673. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM7282588217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2fea61defd411100eeec57c329ba99d0ed9e3f8e9079f7287fc764d5447c6a. 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/FRX452515122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0469a97016918eb6064e9ec2b53aa5243c5f9bde173fd8de43bc2b3bd33971d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX452515123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f85929f08730399b1147e81faee3a22e45f7d640fda13347cbf24514597486c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QMBZ92554292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726b167a9f4582d80cba1f26ebb3f0006f6f8d077303d4b4c2a70e5420d907a7. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QMDA62510741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43dcb1bd20e37be6574a48a23a9d43614d4565a8a2b83c04736bc724f8d5d0b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMDA62510742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fd9ad2f4272c6f28cae76f58cbfce8d9a987abe0b69019e1709a23f59efab3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:42:17Z), 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/QMDA62510743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1c55fd70c9cba1f5b4d0f2cd34e3bbb54fef42c7bec7d3ac016d317084200d. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QMDA62510744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1da4d2d47e50cdc2409c5f2849e17081046199b18ee7d581807bc320781eca. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMDA62540622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8507bd1a7a2dea49aa100f75b8eb75f233e8c61f166e65055c85e00f25bdc7e. 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/GXBAV2090452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370f714bd54852fc0d849cfd825e3e6a153c8152b87a9b84ff7a7bb9eecd334d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:13:02Z), 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/QMDA72539312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf964f38ec64e0dc533fbeec696a301759c6cfa3174342d3780f30a70ff3243. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QMFME2580735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ff938e142e21d10ea008a7842334a9cc551d154ba921acabae0f6156b95b3d. 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/QMFME2580736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb745db32d67600debe7f1150973f8bc4397f5461bfa7e91230abdc63879fbb. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QMFME2580738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56b420922375d2f35eac9b70772a9a97083a15c6618f35a96ce6b475b8f0890. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:58:16Z), 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/QMFMG2528797.