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 0xc4647a012aff760e8db741cce66a95edc7ea1ad16718c93cb1ea3c9fd20e3064. Chain 2 (Bitcoin): anchored in block 953782 (2026-06-15T12:13:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4926158-213f-429e-81d7-bbdc03cabe7a.json and https://artists.proofprofile.net/proofs/artist/d4926158-213f-429e-81d7-bbdc03cabe7a.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 0x83b961b01591f84cb05d133aff9212e8631753b728227eb5785bf68a8c2bb1c9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFYZ2358102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182412380fb3630809444b597e32d9b652bfac22107611dd105bada2413d1888. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ22315323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92854f195de693732714f94d8005c266c92958c16ac5b16942ccd16cd4b16f73. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWY2384031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7577235f862279f0d7f7ad4ac509c63ee1daabadd8817e5c61a99a1c55c6950f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR96X2585689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ad105675c73f6aeb7a47bdbf7e16fbb9c82ffc5e8bc707a382c6a118e836cb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR96X2596951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60de349721ba7a713d0f3d4f453adf9ad7f7a00a1e307d07a977f04b868ed3f9. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/FR96X2596920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70b9bd64b4e9c9200716b37829ec4ebb88d7f909f7afee913cbec66f6f19799. 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/FRX202540870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc893ae2685ccc3cda43f2603972b1402803a9e5185dd573a9282cd83a3ef3a1. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/FRX202540875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802cb33c6c822945363d0f9d5a19ee8432e856630cb43753bb9da1690a3ce656. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/FRX202540865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fee7a6d067b2cad51f26ba38fc6b445ce1e3fe119de460a67fabd5fe73245f. 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/FRX202540862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad55c339ea74b2e0a0e5c424cd13806f45a3ec27b797c5115269402de32e8a3. 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/FRX202540874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866a17588e797cb44d4a55924dc873179fe9f983430822c2406b1a2841ae9a65. 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/FRX202540861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38f4e2056f04d0d9472c0fc1c43ee215c29d604007ef58083208dcb7e04c2ea. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX202540864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf00e71d8cf3efc68b4e382425002a7c637f997384a6d85b97623e286dd7b8f6. 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/FRX202540889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b87931ce5b96461cb0346df9af2a4e84a4333660f68a5effdd6b401c014bcf. 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/FRX202540872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed06ca20a371ae01f204eb0e087bd553fafd0ad330c1ff63337ae3d9a6a5153. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:01:46Z), 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/FRX202540860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9de1286875ec1ff1a712baae529114152584ad5dce4f26d00199f5edd68f001. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX202540859.