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 0x8d1c3fa525c79f9c66f4ef69fc2090c2742a49aa6424881046d3e9bda6a93820. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48975f77-a17e-4fea-bf46-d01736a45729.json and https://artists.proofprofile.net/proofs/artist/48975f77-a17e-4fea-bf46-d01736a45729.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Some Broken Hearts Never Mend (Remix 2015)
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 0xaca4145497e9791d0547c19c6a1e3804f2420af547391e533c1529bdf31c5ecf. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:20:55Z), 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/DELJ81509300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90a2f35b254d242d71ed9c6b62b2eb28daa3d712ccf031245e743b089334750. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEHY11600573.
The Best Of Disco 2017 (In Memory Of History)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22f719354103785964c4a920389726cd36f13f5fc3d28ff314669c0fe328946. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEHY11700619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb7db2c3463ac4aed7a438abbccb7eb28123d7211e2bc4ba09dd61ef56c5179. 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/DEHY11700621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a66fdb0546b62b17dc9425e0958243616c52129f6824d870fe1eba21914205. 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/DEHY11700623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32f09fbd3a9ee61b55ee759099bca6b197d4f65354e4db393519b6b61003282. 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/DEHY11700624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d036991093fac29f47d56d1d1a609aacfc4caa588c0ae8443ee77d44ca6663d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DELJ81936381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8105b7f4be87bab4259ccf1e29553541a1af5dded769a100b87247eb9d4349c2. 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/DELJ81962214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0cd1f34593f040d8989f462f8b7d402317838a3f631bee365bd4b9156c4c54. 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/DELJ82078293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261146a282ec0c6e21ffaa785a330b3cb6eaf03d0becda8aa009e0d799b26158. 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/CH7812040432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5646b85e6b2ad083a78c17a886198095cd1f2f995070e9d9a7c1108079512216. 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/CH7812180325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caffc25e113bdedd7dacfdf9363a6038a7f876b791b9f596a59439c564fa48f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEAR42405712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621db97cf7fa53599b289f1d73a63cd8ff208acf1896e3892401496fcf525687. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAIV2446565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dae5471b248ed18252e24d98250ae4ddb6c8fcd2166da2164925440f34ffdf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAJF2594337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838c5344dc1c7c1af1345f15288fdbd662a3fa166c42df6b4aff5b58b06cec35. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CH7812543268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6626ddfb195b311abab80f96d81af2ceb4e26214cae05b6f14219ed957d3e4b. 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/TCAJY2535596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde34c00bae5e7908512240cb4ddc15c71e7b12d2183c415a0deaa2fc790c90d6. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:10:57Z), 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/TCAJZ2532847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6228f5942332384c9b26465c6bfb3b9a3a972aaf9ba71bac94eebc09bb0588e3. 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/DELJ81609592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086a7b18e92791c2cf429c9c5ff5d0740455ff809fd3e4675438fb7a1d13bf18. 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/DELJ81914548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc9b2d50290cb73bbc678c4d3a8630b4ad876e8f2e0714bba87e4e4f0d05ff4. 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/DELJ81914556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5443fe1c4a937b32b4b4feb75ff03cf73d337c880f1be67e21d158af3e6840d. 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/DELJ81609566.
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 0x9782b5efbb7cfa04f0640d4f3e6c4c5cc57d2c3ad7b2501050db95fd3fcfcc62. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/DELJ81609625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbd5a25b1e72157259276c82acc94489f58caa05b95776003c3b97c537a31b8. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DELJ81914554.