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 0xd96899245a7dddc79497a5dcaf11287cf1e32d3bef3fb26fb2bbbb5bde1dd153. 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/b2a705cf-d12e-4622-8b78-28336cd26617.json and https://artists.proofprofile.net/proofs/artist/b2a705cf-d12e-4622-8b78-28336cd26617.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 0x7268959fbc1f206575324fcecf598b830503afcb4ceb9f6ae5c082eb011cfc98. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/INA531400943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde62ed3d74807ede2ee570c03da18b60a8839e2c2f2e4a0da8dbfc9cf8698073. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/INA531400946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf180ddcae02bba35dd3cd36e0522455dd61a67449c7e2f0d0bc998d40c3a1416. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/INA531400948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70dacc8fbc8f3c3fa46a43638f45e769917652387e2fd09d0f9ee72fa0f7731. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:53:12Z), 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/INA531400950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c35b6b00b04b3b5b7326264b74a106bdc602559d16589815a7fc68cecbe446d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/INA531400683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ed4e8854d58d81aac3164366d601e0251abd38cceb3ffa7a69bd978f7ed75b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/INA531400684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4105615f93c447ac3243ebdabdcb4c631b64d2b2fef13182c9f41b6dabe1ee. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/INA531400687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b9204738c8fe5c78ab80bcaa4b513ca3e602066e8e556fe60058968f923079. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/INA531400688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468af79b227bfa37f4f45c5152f5ece9c75349a6d198d3134f3d29fe275a5979. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX281704189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf387f2dc2d5c7e40a2df06474e3f60d699e570e5d0b916163645d3cba3d8ad68. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/FRX281704192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dd38040e1181299c99401446008455fa5162bce63d0a5bd4106095f38d7490. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX281704193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9199c4b67c525100274d16ce98902600c1130b62eeaa00b0c0b3b189aa2ac1df. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRX281704194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f45c413cc92978f4fbf59ea90e7da94f14cae7af3c4767cf0b436d0b23eb3e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX281704196.