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 0x0742be8c320d0985ae4e20589958c5730e1c997e3dda2dc659422e6d8e41fee1. 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/bc0ddd23-c61e-4e94-beae-ba98173c2a07.json and https://artists.proofprofile.net/proofs/artist/bc0ddd23-c61e-4e94-beae-ba98173c2a07.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 0xe7b1cdc0536762a345a31b91da012c6faea706dfbce0c755165e5cb94432cfe0. 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/QZDA81921144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9757031bfd1dc09b31e0518510b4fd8a1434706393e5afa9b413a68b5bdfb9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QMPKX1752052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027f2e31e3f4cf3c1a58d5972f0faad1eb22c47dc324e87d66d0cb58e7b2da3e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QMPKX1752061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c163446bd1789897fd648b80686aaa07a701cf94da98d852021f296001986a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4DW1788316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1515a79261bf88637311011cebecf6c31365c5de88e3f548906ccf94cb67e7ca. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QMPKX1742108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f590648e6d87f0053b58051d8efea63fcf3d1a7abfc958976f6df4eb2c0d5d3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QMPKX1741252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3b8df93e809e9f079ce1cbd9296f36deae06de05d29ed05e2e5867ae5c8c2b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZCE61874731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80621b348a7f5e3f9134b41a6a4646859776a1a3279926e5f86c82f858d88fd. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZDA71842420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdcc0f96f557f1db93c1d1ffd64781c2f18296ddbd954db81860e0f8a92c5d8. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/QZDA71842421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2e94513b10f9ce159611eeb911507bdb5ba376eab5876ac0e780a469daaf80. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZDA71842424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1f39b1d82144a034db9a178c3f8b3750a328af9263f95333dd6558a658aa94. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZDA71842429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567a157b59a3c8047e5989521cb08d909fa8bca44d96f2d65d0a8391403ca989. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/QZDA71842437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad35a3c06c9f8b52cccb28528fc0ab47a84eb7201135bcfa1010d4e36cfbff35. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA71983148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95aba77d3c9eb15bc1939dcfdcd822e651965b2c7f7020207a7cd4a1b6b5e5e6. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZHN61977392.
Some Adhesion (Inspired by 'The Outlaw Ocean' a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387e36059f9d6d572fd0e0564e9cba8951db8ae1b61dc9419b25cd63dfae84da. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6H2035347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaea7c828e9aba2598b95e008383d64b907a83b3fca6c6809cbc8d7bba24ea57. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZES92184155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb41153919ee6f05e0a022fb5d823c645b5dbf36eecf85563861885cf51cb21f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6F2245042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba4ce995bea0005f043625a1864689373226cf69761f99f0051ccf4f03363f8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTB22237034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da0a28a305452354aa1e9ffa946d87bd200a0c764d107dc26c69f0d5eaac867. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBLFP1582967.