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 0x45439c40043904fa6a245ed993ea20f80887ccd41cc0cb0ee2885bff501add94. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05ecc99f-6c4e-40c7-b373-9f70fdde4227.json and https://artists.proofprofile.net/proofs/artist/05ecc99f-6c4e-40c7-b373-9f70fdde4227.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 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 0x6524d137697cfc01fc3445513157efa1213e386a1b1ea551fb2a94eaae6f42f1. 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/FRX282058627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c000ec86071c4ec2c4f7da67328713984759cc5f4facb24b84111d3f8b8c880. 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/USDY41963171.
Mysterious Hope of Glory - Pas Doo's 2nd Glory Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b1906d50c45aafc5132871a03e4c2394ce2c3d9ae30130a96d1a005a5d00be. 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/FRX202096734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5049c4d5a164ddbc5a320781083a4e0f7ac78348b155b316288c92959ea7350d. 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/FRX762004601.
Mysterious Hope of Glory - Paul Grant Interlude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028a2232920e5c03fa938e1a6988b5b95aace04d8ac8b0dd4acf756e0dd9369c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FRX202096735.
Mysterious Hope of Glory - Omari Jazz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966c0f3215eeb27ed27e9095daade70f44a3386ce2c74b545b0a96a29153dc52. 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/FRX762004602.
We Shall Overcome - ewonee's Preserverance Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfc5fe735205f0b7d435794d4cf5f6b5816a3ff099c5f4496c35756006ee3b9. 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/FRX202055755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c88b1631e8079ffeeb3840b1b16cb8d55c89f27d0a7afeb29b57e7d873fea8. 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/FRX202055756.
You Go To My Head - Stro Elliot Remix Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49330aadedfffd5084948e227faf95ff7c8f1a867697775af684f11248d695cb. 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/FRX282058628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d1b67ad4464ecd33013d46fb10acc3ec20fad6e7527368e8983ede1ebeadc7. 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/QZUFN2200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bbf4b603095ea14103b8f842bef784602a1fd00a2c43e316659f755f12ed27. 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/QZUFN2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bbf4b603095ea14103b8f842bef784602a1fd00a2c43e316659f755f12ed27. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZUFN2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3da558641ef1379d8aeb0a0f4736eb898be80fb341a2a5f4ea1d82187c803d4. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZUFN2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d1b67ad4464ecd33013d46fb10acc3ec20fad6e7527368e8983ede1ebeadc7. 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/QZUFN2200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddc2b1a0d235939156ec8fa11bc763392b1b36eed7ab1cab8cf0ee297318dc9. 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/USANG2204973.
For the Birds: The Birdsong Project, Vol. I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33503317420dd744da66a3b5c2a75e80a04a2ca2f1337daf4f32ef5bf7abffbd. 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/QM4TX2274160.