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 0x3ce184164e072905e605513184d82d05459b025a6fa9dd1e24ecbf1602283a14. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b050689-9497-4e67-9175-766df4603bde.json and https://artists.proofprofile.net/proofs/artist/1b050689-9497-4e67-9175-766df4603bde.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 0x7e65f9413107433f916b3344bfb4796c823569ce053a9ffb56d8e55f57d4f6fb. 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/JPB601882651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba9ad33fa1efb8b573f8c546bb341a1c0d9916942256d66b82078d58198625b. 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/JPB601882652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae2b53150ac493255f99c082f40131b862b27875606b864be9d2a9700edb5bb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPB601882653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47135688aa77d594b7c7f1725cafc5a338d37a5e1ef5fd426cdf14f15df6b238. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPB601882654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c79bf97e162490889a287cf79a3309f62c342cdfa695d600d84efee0afa272. 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/JPB601882655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23600b78b03ba963e9449917e09b7f65f8c00c7c4bc3eb70972d7349e4d8f072. 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/JPB601882656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0190003fb003906890bde83b9947fc0424fc8742da4a8a7ca053107756f3c6d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB601882657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6b6ef14e3a70c8ffaa31538977763e885fb470023e2baf13fb45be0f83b749. 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/JPB601882658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f083ce206ce330f858d1b6aa647b1771096f8810ee758bfa07bb4a3c088e2b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPB601882659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8930deba1a67142e51e0af3cc1f6d832514326b28066ac9da2c32b3135755ac2. 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/JPB601882660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4abf3b39e6dda94a7b53496c481477aad31c3531494fdc525984c6730ffda5e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB601881899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb925100975488ea05fdcf5f493914539c3454a04e51c938872a920ce7ee15a5b. 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/JPB601881901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05aef82a43ceae39cd9f51b380e3c1ba18e9bf0b51432f1fe06c908ac538be7. 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/JPB601881902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afe26d2f983037d32e8a126efcb345cad613e81a0a4f4e91645ef9082ba63ac. 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/JPB601881903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6761f093a3bcb87f703d70eec479071b0776db70337240954c13e76c91a401b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JPB601881897.
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 0x690a382aeef74481903a3186ad0cdff81aa92c7d534f3b07a2cf73e945f5e990. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPB601881898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f6e8b156b57a05b80399388ac290da53d46aeb9c510a3295bfc7e94e30ab3b. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/JPB601881900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb952ce92520c7df91c415def6e0aa79efa9ee288fd1d223daaaa23ef5c49f32. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/JPB601881904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5426b62d20df492cfb11e7031a96157c0413a667b26461bb423eef97ff15f62. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB601881874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48550b068ceadb5b826f8fdc3d80d3ac28e3b21ab8cfd40780219d9bde8abb75. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB601881878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1ab31026f0d837b070d71a1988e64b1ce91f3673a6446683e69bcf9af85b99. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPB601881871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97e19ec76f8d0e39e97e067abfa7b0f78d7b233070cd7603ae946765e5c9c50. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/JPB601881872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c082e46c83b78109c70975b16070e728cf229c849a60ba1a220206146e82be9. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPB601881873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b478bc35d9b8d607f7f48bd720d9c6c3e7e7a3da39441c0b7ad95c991edb22. 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/JPB601881875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c4c1e0c51c6636c2ba97a585c2e7b7ec20367e10e818e0f0cb1a2c0a94b587. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/JPB601881876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24df6e9c34a65630f0f76c2dc3ac0646f02147d6a58b97d83c0020f801f0924a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPB601881877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3022f307b7b0a60aac4ebe87e0f3963a48bf1870c9a5bd6c096695a61bdc589. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/JPB601881879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5201340dac0e5e291c348c54272903aef0bd086929a487fba418949d79c66efb. 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/JPB601881869.