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 0x86343797cce0259b5382d55d04fc7623e1bca7087091c103144b2762fe50d936. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42c36e1f-23bc-4820-a0cd-138574885fa8.json and https://artists.proofprofile.net/proofs/artist/42c36e1f-23bc-4820-a0cd-138574885fa8.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 0xe0d9372ba3351837e59b16f9fc06dcbfdedd5871b02cc084e417edafd6caa757. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXJK02300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7ca8b184b76010ea55a06fbeaec6bcc981f099ee84895db9e87f79cfeb7247. 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/QZGLS2366959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd7f194f0bd4a2c3aee526128a7c05f16e6209093faf33a1ab24d5b6b40c7c6. 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/BXZSC2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b279be33fd31d31b05f1994afb1ed9734a06be7b7ba19c4b7b7b3472ddd6e8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BX85Z2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a23b14fef2b6fe1b76d18dd06fa17a08278525b85514722ce097b2e496be3b. 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/BXJK02300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa975b0b21a966646772662256b8360d2b725f035bf65a25eccaa3f747d2074b4. 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/BXJK02300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f3308a63c54a5aa4ca281035b6b9d290f4bff7c697ba11644ecc4951fcf625. 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/BXJK02300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db688fc5ec48a3bb62da39737990e1a3f9b1dd245d066f3cac806424f33a58a. 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/BXJK02300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb6327229fa6c1b7a1ee8047aade6d15385de8f2986e38e71646acbd6c7618e. 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/BXJK02200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cdb664606900fc8c6ac5a3263e09d45fbf0acf78e8ace6270d71299aeb7f0b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJX2060835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f506b204e3e39775b216640e3054e7b4b987f3e20fd7d2f3571d47122a7bee. 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/BHXP12000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f729988e9f2e26f23fb4753b69a1d40d92c31f53e0dacf037370cb056b6309. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BHXP11900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77e0f6d8c4cf67bbd5ef2df2acce980147e6e044b0a3e0ae23682d7e41cb9de. 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/US7VG2071011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9408bd339999ec4edfaca81d87d980c994c9b96fb362e8c89b3caa3de57fa3b0. 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/BRCQE1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e4df76ef6370d6288d94f4f99e1312a7aefe2c4316c26bb605e9acaaa00633. 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/BRQP72300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dd7cc2bdfcfaf07dd5c3dcda9d799ea596a2c22ffc546440204a4eaf7f4c90. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7VG1675679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43646f6caf07b9aef25b8f7415a333f8fb1d358d04de38a70f17133aa1a23099. 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/BXD1K1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e92c1394071b7f87d3965a6eb26066cf0c02c34c8be1437398b4646a9b02a21. 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/US7VG1690999.