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 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 0x2175063b9f72ad584666f704a828c04fd2e06dd236201c6f5a0447f2a44df454. 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/32eb9192-b9e7-44bf-9e27-67ffa14d12c0.json and https://artists.proofprofile.net/proofs/artist/32eb9192-b9e7-44bf-9e27-67ffa14d12c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ballantyne (Movement 2 The Edge of the Sea)
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 0x979da75ac7f09fa4d146b19de65d2ab9fa6e64ab293079a2b670227b50605407. 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/DELV41900710.
Ballantyne - Movement 2 The Edge of the Sea
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bf1801007def9d0fc54a5730b6cd7053dd821927d0e676e46a1b685458b7f1. 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/DELV41900711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a578dd144c9a354118037e710ee4ed6c6dc889c70d574fde7bd72164ae658e3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DELV41900712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1feced8b10499b34f36e519ab8c101e4c1fcc6a1668e7468017d53e3cb89ef21. 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/DELV41900713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849e08617b3ca64711822792a4b581ba6b33acb8314877923de6c837a91450b8. 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/DELV41900714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf684ed4a8a5da1d854aea91fd30fc9eeddda697eef42a45c024891ec72aa56bd. 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/DELV41900715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccc6e971cae3dc79ea3705a7d7a76fc7538c54f79498d9bfce9319d45cfcefb. 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/DELV41900716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffacea72c98299a9736dea4987dab6c9c6011f59a55a978abd3b6eaf6bfceb5. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DELV41900717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418a717364813839fc3e77c2f22d26c13dce67a52b24f92fa76b2ba8b273a7a1. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DELV41900718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6475ef553811e57b307d352d5b6abafa9a4823933f42f1827f723a13bd220ad1. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/DELV41900719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2945494c8b48fb600bcbdfbd147d726cec13e2afc2f8a9de46fee82e0248a9be. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/DELV41900720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eec58b7201d83bbde0fa37c8004d494129ab295084fa6e64446f2c3b8d1ba37. 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/DELV41900721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe15fe91ccbd0d2c42a30508222856490b0b160d965431894226b25c78f0908d. 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/DELV41900722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1517fea3e2c93cc6061829edc8f97a1ca8daa15a0295f17128d8dd74c2f722. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DELV42000168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6838ec626b7d4c596f3d61c54a4bc297a84d04c3e2db65574d59ef121856ca2b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DELV41900723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabde0d38fb47e44e40680e326dcc0db7157699247ab24c2afd53edb74e6f022. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DELV41900724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d043cc1aa10092ad0774aa7fb71876744c5a8a30df7a9d5773e9f8ff104eebc. 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/DELV41900725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9470f896da6f017d0c5f8e7b08ddf520f8a8e464d6c7227a585a90ca1149ec7. 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/DELV41900726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbfd588e9d06733a0b075d9e7c1a0f4819185e00811542eb9fe0f3e05806241. 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/DELV41900727.