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 0x507ff1f8bb493b1c88fb7fd425ae2074862521263b739037ec45067cd984dc41. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf07ed2d-87f7-42af-81c5-d57eaf89697e.json and https://artists.proofprofile.net/proofs/artist/cf07ed2d-87f7-42af-81c5-d57eaf89697e.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 0x4f8760fb45c591c93bea9fd235c1601d3ce84ddbf4fd288503054ada596cb09c. 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/FRX202265699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1770f240eac836dc731b37b1646bcf15fb823be2d8ba16f7213fe8beee83e5a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FRX202265701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4246e99a028940ac81546490724d69c66b879398b356d1fade58647fbc561c. 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/FRX202265697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fea3c608387c44a8638977c7ee1032f99b4ec7ecf5defd830fbe27da99aab09. 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/DGA052212519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbf4ad1227486a6500c02324b730c9d1a3475f6172e4fd1e5e5899674c1dffe. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:50:07Z), 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/FR2X42367827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4611690ce856d0ab364053d5e92312197fd337dd81e198b52fc5bec9046fb6fe. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:37:58Z), 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/FR59R2398546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f74ac858ba5771b12fed6ddc42ee09bd3b8fa3fe50dcc6a86e926fa6808998. 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/FRX762395863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4f326459c16d2e91ce11ca72f2344bb67af420cbd185184081079aa00d6385. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/DGA092353957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b91ba536af6568a5e623c1ddb02c32738f0f756983b089cdb7e22d5a45a65b. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/DGA0H2338389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b91ba536af6568a5e623c1ddb02c32738f0f756983b089cdb7e22d5a45a65b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:14:51Z), 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/DGA0H2338389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd52821b6550ef17e664c111624a6c1d524394b316beeec3296649cdcd75aa4. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:31:43Z), 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/DGA0P2333861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd52821b6550ef17e664c111624a6c1d524394b316beeec3296649cdcd75aa4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DGA0P2333861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c5008b30bf405e2e4c3ba14116ff1b55f7a1ababc8cbc984b97ccfb78adcd5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR2X42436073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a6dc583e9f4ceaec1eed7850797abe9a021b8ab1c1b7de7171fc75c22e344a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:16Z), 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/FR59R2427578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dfdb69e9417235a6c3aeca1d072188d64ef097fac6cf3b42b31ce61318d1b3. 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/FR96X2468620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89db9967850130260e3c5b9ec6cea0258ada25a48ef9a94b1b456d4fa975a3c9. 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/DGA052481123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d409ed92f336db09dc5b086b940b2da23ba83123aaca9472f0069c7f70a920f. 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/DGA092426825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d409ed92f336db09dc5b086b940b2da23ba83123aaca9472f0069c7f70a920f. 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/DGA092426825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55aeff0713dae35412ab4037b1f19b21037f3de5f9339596c96a5ff951bc83a7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:55Z), 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/FR96X2570941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf1b97e01b76159b451e87b451cad470e488ba2ab55bf6a9c67e0340af61846. 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/FRX452509716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf1b97e01b76159b451e87b451cad470e488ba2ab55bf6a9c67e0340af61846. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:11:02Z), 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/FRX452509716.