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 0x9619e6c973d4643865b84b1d2de6f49eb170b719f3bd8522182cee4124f8ddd6. 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/62f8eb00-e5af-4e4a-bcfb-809f5a95bd8a.json and https://artists.proofprofile.net/proofs/artist/62f8eb00-e5af-4e4a-bcfb-809f5a95bd8a.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 0x9da0ac4fdbbb1bf7ff3681c8a2f61a4a1f6d48cdbd8c9c719e55254126a6479e. 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/TCAFB2092811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3da3ac713a6b6a3fc5cf39752c3149e589894c3d5fd17a2be7ae1685d9203a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TCAFB2092824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7c6d3355db03bc803b7174f86243fc67cb329bf0c06b1dae9e535996a0d3cd. 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/TCAFB2092826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d670713548205c65e7ee3617e275c01643fab84844a7f99481f595a45508738. 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/TCAFB2092827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41995acdf21947ff5209c5dc7b900ff438257f01af13c0b7249c3ca0baf56351. 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/TCAFB2092829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1697a454faadc86179e6a1f4619431b8877f05e09436d0dc8f92967a9bcb49. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCAFB2092804.
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 0x88a9635006e5688d5302bda6e848202602e54bce68e107701054505565639034. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TCAFB2092806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30962d10fb53a2e38499d02d77d4d2d4f1e09fd95610c8c37cad8fcaab52d9b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCAFB2092807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90f556cb7e15d49a83389c689469244e707d7caedb427afcad41c6d09da9bb1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCAFB2092813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b17b2a2a0815de09d8257824fce37f6788df09834bb1316396d7c33e08a7dc. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TCAFB2092822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f80446d946226d2e0b2518267b9f6c0f1ad946a591b860fa7fe3225f00b162. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCAFB2092833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113a3adf6268b66ba64e43d64db4f98049f36583a004b1779c97b0b9371d5714. 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/TCADQ1821010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7087b08c403ae1a9860bdfb9de013351a19cf20534714aefc73afa80c4152186. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAHW2494990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3374578401fcc15b59d488607d2d43469057717416ce2a989fa902905cb8f90. 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/TCAHW2495054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60621dd59c9318023a33fe859cdd0f4c3746b1bef030b23cebba3b5dbf086d79. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAHW2495224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d8d4330aa6865cb018c8123e925a35d8ca4025f0293b8b92a1c871105cbad3. 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/TCAHW2495294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df3a0db3c2518b9c5eaf3d0d41532109b2dcf2667f5edc591aacd01505c1eab. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCAHW2495135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1728edd2f8082e108abb138ef227e498c4473e53d8a05769c9686114b4d4774. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCAHW2495204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095316c7c1a54452adbbbccca6ac0fb14d7c1bff9a28363a45ce4036e45a1e46. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCAHW2495320.
Count Your Blessings - DJ Terance Re-Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35fc7fe441aa6951e7c2d7c34499b45b035b2c688daae3fc762356f5763ec8b. 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/ZAY591403251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bc85c737dc0a3621aa8e494b23c32ffe81bdc60b4564d4bea0fa240c504976. 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/ZAY591403423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5275d839f31adf259f272117565175750cf6bbff9fb7d1cb48d14b644c76f7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZ651360834.