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 0x98030e34fd60c8fa175600c04156996e04c6ab3534921310379031a59fb8b98f. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f290cc9b-acb7-4ad4-978f-65b155c645b7.json and https://artists.proofprofile.net/proofs/artist/f290cc9b-acb7-4ad4-978f-65b155c645b7.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 0x89a22a0cb8672d8ee15e5f341654e440fc8368ce8b8e41246390e3401e301ff6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLCK41081014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d5da0fb95f44149c0a661b635f150e8e8b6bc0b95c56d035cc9881cc4741ce. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/NLCK41081015.
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 0x7a2b48ac11bc2597ecda735778893aa21735ad63919c1b773668b337e0c30579. 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/NLCK41056936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c947484abf697bab8a440698a38f86f439ba192114e635a843bbbf5e612918. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NLCK41056937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22068ea53ed7c1729f9c691135c633685605c6c604a00499f335a20219976103. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLCK41041391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad5a307a380c0a8c0ebb1ecfe716fb341e056b7f30ba9f1624d6123590283c1. 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/NLCK41041390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f896c1fda5c2bd5c71efe80f2cb05af750a4f8a5c87c68b174f4862a96408bb. 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/NLCK41033585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803721a712f9daa2dd301bad4fb3dcd73a7f778ec407b753cb74a98e952436de. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLCK41033586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c04c8244224de87df52afd9d93fe29b7a3528863c87d2008426c9f3681715c. 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/NLCK41400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f92caf01fbe19e478c7fbd1e4732a00ed99b63294abd65acce20f5827c19357. 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/PT9BS1300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171b49843276d7d58516ae3da7cf549d65b5518e426c6dd0dda0ba63784a12d7. 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/GBKQU1359725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d7a0a9726d10920f635a7e08d9a5e7de555990822d173445c8e840760f6760. 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/GBKQU1359726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a2c60d288591d9b01b549da37c24e32b0ab1357d74aaa07bdc7d82bbc16d45. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBKQU1359727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c2efa4b5b2882a3095fd4d602689c78475d565196a29c85d9ce2923f6f235d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKQU1282296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1405d2b1d655f15d16a31bb967b43a2c1d4b6d5b153846378ab58531600fb9. 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/FR6V81054568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa57e979d3ae8d5d214f704866dcb263d852f6be91e8ec2e69b5230ec4bc2712. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR6V81054570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef4ad2657180b1455df08bf3b7d6e20a4c2ff9ec69902999de6ecb71c0a68b6. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/FR6V81054569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecd9309a1b85232ece5d1d78cc4b3964cc95fecbd4fd00b4509996bb45629f3. 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/GBKQU1026781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff05aa2dd98ca056b9543b54ee822fcadba62e2f56e85d679de6f1bf7553e303. 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/GBKQU1026784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee83193f8d198dea7a285681c757bbfcbda60215ff442c638eb14cd0843ee15. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBKQU1026783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889b8c06f24bcaf9277adc427375bc5308be95ff8fb18e7c9849a42f816c3a28. 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/NLCK41400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd332d11e270ac216f2dca9e3f432fe0ac854ff0efab563efb06791410f24db2a. 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/NLCK41400376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e41ce0eb5a2277d21f317aa8c48676c50e3afa3570285dbc01d4e9e845e2ee5. 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/NLCK41400377.
Chill 0 Spain 0 Serius 0 - The Last Selection Ext.§1.1