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 0x15dd4c2e183f88b212cf77d3277145e0819319f6016c9919f58cf5d3fd18f1ad. 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/d4eb2b9c-0e23-4392-8296-c5c8ec6662b4.json and https://artists.proofprofile.net/proofs/artist/d4eb2b9c-0e23-4392-8296-c5c8ec6662b4.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 0x831b8e5139b9b154cc1027cfddc2a7ad6015a7c763c17286271de38f60eb9cd8. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/FR96X2010168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce2d8ef47e476832aa87205a6ec528e30e9bf6714f3175811e8815e04938860. 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/ZAAA52012010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75dae3afee5f98628699ff3961bb78fd78184787bbfa12615b368fe20d7a6d4. 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/ZAAA52012011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03203ab96174def598197827efdadb267c8ff8860fbb1e315dd05fe80f6022df. 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/ZAAA52012012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1885f467960efa2132ac7be2fa958860e3417b0c9820b5836a8fad8ffd797d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX872232149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ac8cf5bb6d30b3818c56fe143bc8d9b1d0eb6edd0cb954aec6b70c990c5264. 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/FRX872232150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7593ea349b93e2f31a35bafc2140002929c02ed2edaa84e6fa319ecd77b6333a. 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/FRX872232152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8f4c7a2e2c446b38f61f5371f11af981040215002167c1b44e426927531e22. 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/FR59R2209673.
Don't Walk Away - 8nine Muzique 2.0 Deep Touch Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b45b00634c577b2bcb87dde3396c33734c0fd1ec7a6df06ba633a8e39dc44c4. 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/FRX872232157.
Appreciated - Gruv Maniacs Project Vocal Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebe19673278c8b8c4e7b42eddd076cbc413a662b726144980d777b9433b0d90. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FRX872232151.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27cbdf87101fac789eeec46f20657f6700e16f3a103b7683f09f2b65f80daa6. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRX872232153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cfb9f17f202df71d51a8a6313eda3910f6ea8e9c970a0317342ed3187eaa7e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRX872232154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e6734ae625ca1ce365e744caa11e54861f2c953cc8b97b80b8f633d3081480. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRX872232155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf88b4f09f91d0016b61b7319c8f70a2412ae4d333bee93a433886c11ed52570. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZAM142400353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6488607f12e09fd0fd356c983327f4e6e27a69d9eaa302e9023fe8d442e61899. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ZAM142400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3958ceae2c24805993606c21f030d056802ed87729aa5bf536a8f363290251. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAM142400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3333d23df1d28b0345fcb5fa482a98d8ebf05af09a428ae75ccebc6466071c8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZAM142400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4e083a0f4e0d4a209544a306c41a9494335fbf0b26c30d45fcdf55e561567c. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ZAM142400357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5b5d0768c93d79d1411b63d40f039c5d97fb52d243d4f86faf68762db8dc61. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ZAM142400358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5a1dff922a2c353e09feade9bb71531e9a119df0e5dd9b84784951691426ba. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CAGOO2591660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6de5e1efd93ddb9e7e4379f9534939468db167fb255c52930d648a578cc440e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAGOO2591663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62834518b8b3f3ca8654aabdfb435ed9d71691bccd99c551a781e4757bf7d18. 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/CAGOO2591665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68552a1445aa0c9ba3f971e8c955cd512ff2644fa7337b55f099ef5f80fa04a. 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/CAGOO2591668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2079b11df31119c466a7c05888a1a15bd02655bc9a6797b8c7140d7f3afd20. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:03:59Z), 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/CAGOO2591671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a18f36b2085a6245466172acd6154715751a44c728a1f4f3ff491b78e969c9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:47:31Z), 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/CAGOO2591673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc46346733e9ed18d8b16e80e8cffb3ea0d11bd2ffc0057a87afe65f72bd958. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:26:37Z), 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/CAGOO2591675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6837f9854ba9d77b5d4a7f4305115fb92213e03190cb996065358e02751a72. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:30Z), 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/CAGOO2591676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041724ba438edd543a063e32b8cefe35fb24d0a5b725df017f0bc46d3d586a1a. 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/ZAY591503692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beef54c5664374882e8d92a98556557b70ed9533154753b2746a083a2467088. 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/ZAY591503694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf585a702247a414b419f4cb8732b8e7bf16e1dd73a108d7f953eeceb4f5490b8. 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/ZAY591503693.