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 0xfc907560acc82e2640ec70bbbeed46900cadf2d4aedf5d8b8b208a1882df18b4. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69b1d76b-f211-48b4-8f38-59ff825680d4.json and https://artists.proofprofile.net/proofs/artist/69b1d76b-f211-48b4-8f38-59ff825680d4.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 0xdc9e257cefce3efd75f1273fad72bd50857901e618e63a6f2d8313ab3c72e105. 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/US6QR2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb1bfd026a1451614625e93e0c2eb0eba39047d831e609804eac835cd4b1d75. 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/US6QR2300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd731d2dcdc52db56963c915b3ac153c91b297e13e5a0a9e6b89f289537b5bd6a. 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/US6QR2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e8863cc9b581a2de685e30bce4fdd0e3fddc9b1a48bbf37c34157d076856a9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US6QR2400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e82ad2dccff167816e224b2956cfe04101688a9227722be52140154305009c. 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/US6QR2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24036324941cfa0a8b72d2f1a91654641182133313a4c0a296cdccf1c08c747. 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/US6QR2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e65cfa1724736040e742e5100d84d72d5822c50dee4e93d51da48ee15b674d. 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/QZFZ72227360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975682245c5dda59c2bbc22150acb70b7158815971353b96cc572a1c1984a4e9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US6QR2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb18cf7bf94faf4181fb7f18f06ddd89fcec3e086873ea1d1946867f1ae79a4. 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/US6QR2400048.
Go N'éirí An Bóthar Leat (Putumayo Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12cdd360ee0a60e59de123b7334d467e9916c593d4e53ee188003d38e36e16a. 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/US6QR2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bbc400831dcf6ddf11f7d89f67bb899d1f3463c0a5fa09d9d0384108756e0f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITM162316945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d214bf8f79c0e8183a5b6e761e7f201d9634cac692fbcd49c2ed2a3d0438253. 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/ITM162316902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cbbd6048aa5340ebac42eb6a54dcdb56a232a894a904b57876925061133e8e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITM162316903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7269e5e909e261eaa4c861e59a87a03b43a329e8c533fee9a0a84ad6edd4e237. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITM162316906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9d9d3b0e83a98949b2a01abbe5a021de57863287e144433e009da6a1e64ab1. 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/ITM162316907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a1d223c1d4ba7522ae95f04f99011ebdee3831451ff3c42dde1f898c84a814. 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/ITM162316909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8be9f4b1ce1d032b66f4535f4fa449a008484726b4725d8a4762ab648f92c0b. 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/ITM162316910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185222dab3534fde1b75aca72eedc5a3ed83fbd13782050ed8e74a8de0f48e77. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ITM162316905.
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 0x772089715105bf2d30b4a43026e012a5c6412b8a45db5c1cb16e6d37fcf4b4f1. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ITM162316904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce2de558253e69aa8aedc7aa59ac09baa410b0f834ee8626161106c689d49c9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITM162316908.