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 0xd24df980cbb7b3c80f85dbc455f3e9e03b68c58e380ee1f38a5e1f3b9866115f. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/869e3345-a189-4a13-a7b4-00517c434186.json and https://artists.proofprofile.net/proofs/artist/869e3345-a189-4a13-a7b4-00517c434186.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 0x4ba6b7d358b4a81bb7b55426e83d32c2e1448394a19d641005a6eec64dba0844. 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/RUAGT2370921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7516cd9219557cd0bc9899e07377434d664bf945d8db38bdde117bbd1a6545cb. 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/RUAGT2370924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acdbe790977028601c7ee04134c2b991a2809a1f6308ad00db20d47410e59ff. 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/RUAGT2370926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc403650ac7a8591df4e9fb173de8a885e34f5f56ccf9091bc9971dfabfdc9b34. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/RUAGT2370922.
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 0x71e15f4ef4c3665f5f635de1b7d308e22d37aae0b80838a98757697e3b4fe494. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/RUAGT2370923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf005c4906060182ddccb2348429c7a4ae476c44ec02cd7c7d376b6fd12308408. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/RUAGT2370925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aca6173ff9e745dd206b1bf2644fbf9fc76b9681ba0e0cf64cf91fb65500ac1. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/RUAGT2370927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418557fa0f95c23bf55cf70c50026c8538624ee92c68138c9472e5a0bedab0a0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:25:20Z), 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/GXBNP2449162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d56b9eb561127c548c4c8abfa9316d16587251e3eb3f2c453b72ac2cf2d1522. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:21:09Z), 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/RUA1D2529781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0090db01d51c5f77c45b740c3d561d2785a17c67659bcbcba4e5c56497c24de5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUA1D2529782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0242a9811e100546f9382795932ad161cd5633b7ef0ae09c22ba741365953cee. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/RUA1D2529783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43a83d997f5f49944ac4d7be8dd9af2c782cb59dc1ba299d1db3fcce2d2be08. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:33:26Z), 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/RUA1D2529784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728dd1a231d7673993b3e077eb9bc2d0c8674c6ddd0da89cfea0f6c7b01b59e1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RUA1D2529785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07140d8749d39d8f0e53e174fc431b59a1e5c1f15e9968c93afa6614c99be201. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/RUA1D2529786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3f1f8a07d15adf7679e3a939c6114105d39b12180586e91fdf195d9e5466aa. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUA1D2529787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550d2f913e9e91b0ebccd21b01d398f206434b6870cbb14bff639ac9b25c2800. 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/RUA1D2529788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90eed16b804df9b64024bfbc3d7b54788018209562c7a5736dc8627e6b4c7d0b. 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/RUA1D2593785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69338b97da26bc9326b3d23458e708bf8b0ce8b3c6888489d165db9717cb698c. 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/RUAGT2514771.