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 0x72348f665b2633373d36a4b0a18bf9c38f503c73332d73892fc92e521152bd19. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bba60c26-b71c-4fd9-9dff-138cbefad669.json and https://artists.proofprofile.net/proofs/artist/bba60c26-b71c-4fd9-9dff-138cbefad669.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 0x4568777b67cab1b13cf5da8e343cb1a3dcd3c01996c2a88cb6b0599e4491dfd4. 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/ARA901500443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f56e82922d40ae64c1b68f963974ef0915645d1d07a7c23ba3eb36311c3f7a. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ARA901500445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169f25c8cb70bb8d263cb780101e18487a181fdf13760f6ebdd832896fde31c8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ARA901500446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df9655d74c51fb2b3361db1d79b71b297de29b4a4134e427c657ce83d17e2ae. 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/ARA901500447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4d7acd389d69282a466442dc30ddbb16e30189e70bc1d90d05ea4741678bff. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:06:24Z), 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/ARA901500448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fba6c906660e9a2fcfd4ec344d54ac65886bc2d8616973b63cbb7a3e354e11. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ARA901500449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfd1913be7d2a4f8b3049f8b9aa7a328bf5af1fa44b770748168f8a46e64018. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:36:29Z), 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/ARA901500451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ee7612e1340d45b3a7e179d3d0a130d3af7d1a4fce2d4c1c563bcd5831d08e. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/ARA901500452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb9366ab424022e0838cdef635e8a668c28ab061292801ebd1cd65a55d2f5e3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:02:35Z), 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/ARA901500453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2249c54c493a41f5648d4364319f14758aa5e86e8f7b7e1138cad0c94faeba3. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:04Z), 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/ARA901500454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e5c5b9eacf65d6702ebb073f357aaa5a7ea018ed2b95cf4bfdfddcaa3b2317. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:47:29Z), 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/ARA901500455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a31b6dbbfabeb0f5413fb64e2fe3f551d8e0c7b5f2a0f71659e0bfcd5cb07ba. 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/ES71G1622485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde4536c4c0417ecd2c191e49de6d0a911c04fcf546b3dc3e41c6a951ec68416. 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/ES71G1622487.