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 0x1d506c02f1926a5ffebece15f0201d516eb4cd9e0b457b0054985d27936d6896. 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/751e8213-1272-443f-af2c-8d8e67446f8e.json and https://artists.proofprofile.net/proofs/artist/751e8213-1272-443f-af2c-8d8e67446f8e.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 0x51fe22b3112c6157e13a370ae196e43beae597dec95a05134659f10a8ca2f324. 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/FR96X1843854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6815b22b233e1f0a31249ffcc2c8ef54f816edf3b83ddc49511ad70d2f740272. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:48:29Z), 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/FR96X1852746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3dfe6c438a0bf57a4eb3f7dac0409df7bd719deace48928a798b7280355c9b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR96X1852747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d3466580c376e208f82e354ebf63f4e6e2884f18e694beab87b97a24da28c5. 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/FR96X1852749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8d7b75882ff5b4ce687d6f555b6275f4597619548759cd1b68060d5e10cec4. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:39:22Z), 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/FR96X1852751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa283c134e234b7a41b2e57c5ee683804c7fd4d52c111f0d118fd6a9c8c298c. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/FR96X1852752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964ca6e0797ed0288d792368114c72af5c631e588471261873ca936b3fb159f0. 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/FR96X1852753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73974b308a178080c88ac7a5110536ab3282274e9a761752f5c407f10f2cec5c. 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/FR96X1852745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6815b22b233e1f0a31249ffcc2c8ef54f816edf3b83ddc49511ad70d2f740272. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FR96X1852746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3dfe6c438a0bf57a4eb3f7dac0409df7bd719deace48928a798b7280355c9b. 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/FR96X1852747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe273fe9cd79be5982577b0f7ffce6b1ddb5dd3c41f2a2f4fd75208847ea585d3. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/FR96X1852748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf024e61e985e510611c9c388b80056a927e99c87278bcfd2e4c4bd0411c3ca07. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR96X1852750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8d7b75882ff5b4ce687d6f555b6275f4597619548759cd1b68060d5e10cec4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR96X1852751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa283c134e234b7a41b2e57c5ee683804c7fd4d52c111f0d118fd6a9c8c298c. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:57:21Z), 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/FR96X1852752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33109c62507f1bc2954b5ce42f716b822a78f6abd9399eb47178ad89f017d0d8. 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/FR96X1852754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b17f073936345eccc0e2ea998c2de61b1988cd5edd5a36af32a20453ef662e6. 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/FR96X1852755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd7e0032591413cbfa8d95056e1048c037236b9a97e15fdc1dba1b37ec4c9dc. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:43:03Z), 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/FR96X1852756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b38c895561184bf533e01a5ff26f4cf3595e8766fa0aced38ab7c1cb1c0b286. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR96X1852757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef58bbfd68ff133e86820d75eaad6cda1c82f59f9b4c9e929789ca14bc465b0. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX201800924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392e6722d6d4197bb60f1c03f1698f6e6ce7cd3dcac3ec2e5bd5a2b62bb6518c. 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/RUA011900363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccb6a4191ee31b61ee5b06418cb5305e815cfc21f0889ad8daf99aad4b1d171. 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/RUA011900365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a937feebb74cb3b0b90c4cfe43ac8446797551891f59a235fe0df7d18dc2ad. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:12:02Z), 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/RUA011900368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449b9c35f333dd814fb58263b2d86e870bc1535fb899112ea1efed009ca9ebad. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:57:02Z), 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/RUA011900369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8860285a9e96ce9f48a567cca5b07c1125b3f651de1a092aa529dd261c679d8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:01:10Z), 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/RUA011900370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62ee6bc38fb84cfbd4e235fb0253b1c851e82ef640ae07d7a7930e0bbaf5585. 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/RUA011900371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e2d0b433489ce3012b5c3fce972609243d011b15ee698d5689d4eb1bcebc47. 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/RUA011900372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b67ac43dfbf12098665204782d7a7768aaef4c2745ed87ec93465a710078f8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUA011900869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a4ae48ce505e277065674fcdd400eefd5892ae069143d872287174d68a4ab2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RUA012000763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fb7e59061b50fc0464dc6e6f7c3a2e134bfb66fbd59edab2ed146eee27b3be. 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/RUA012000971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d1fe766fd5cf882cf7f616f7aee05ff1c28731727b079bf4ad75892f459c50. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:26:53Z), 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/RUA012000976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91de21fbae5d262d982d6d21bfa51a3eea638b060f2c6ca23d177d6fac99159. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/RUA012000988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab5f17e3b6381a1994d1bc2d2f5139425a071f30c23f07443e7f38d78f21132. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:17:09Z), 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/RUA012000978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc79707358c892deabbd162ab9e1e68902bc9b915ac5591eab17a44bd7ddec9. 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/RUA012000979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418a9373fb20411fda55a9a03a492cd8ed2fbd3aed4a3620d2bcc78dfc7c353b. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/RUA012000982.