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 0x040644a51fbb83bd29e262f0fc02759708c7e088311386fa5c5ec9c809a7fe52. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdb484c1-16f0-43e4-a37e-22cd8bcb4b03.json and https://artists.proofprofile.net/proofs/artist/fdb484c1-16f0-43e4-a37e-22cd8bcb4b03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Trumpet Man from New York City (Pete Dingon Presents)
Rainy Day In New York City - Times Square Mix
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 0xe1a2ff111edc352d8a070b0b239502a6f007072bc1fef9b54db3c043a68825a6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEHK11800643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ec3efda73b8ee00c68546a240f617c36624eec5e0a367d9bd0dc6752bf61ac. 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/DEHK11800644.
On the Run - Pete Dingon Instrumental Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be1834e9f316f88cf546fdda32ed40b322f2c0560cfb966d42b9da7eef00ae8. 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/DEHK11800646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9636f2c7b2bbd5949daf079bb416f01b95c93dd0980ca30ae1ac36f79815ce. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEHK11800648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd963b895e26404bcf8f4e359aa9f68fc520089bdc7dcae7a8b350f8e8c58ac. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEHK11800647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9143ec58cf105133f855f98ecfbd5610d8942f4e96d7742c05a824fcc852fe. 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/DEHK11800649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a1fc90d21a0e6e13b3457c8bd3bb2d9d306587101a76ef3e6ed4e6b157380a. 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/DEHK11800653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8741569a039a65e3c138773501f2a50378c523fb991e5adf0562665610765ad. 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/DEHK11800652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904cdfced7c671caeee1a4bd3cb12e8d0c96becb9bbf0e3c9b9052d5ef5a2508. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEHK11800656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70f598e2c699b82984fbaef5a2fb3805aa53c62f4ad53c05817d53d35e8d766. 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/DEHK11800655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57210e9ecdc364288c4df799c38884ff97bb89056f39b588b70123aa8de5b33f. 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/DEHK12400894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921e98b9ad5128348cd032b1982bbaf7c75fe3c251ce455f510d43b206bf4454. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEHK12400889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1952771bb02eb1268e5e773c0834a9df646acb4385a99e1b6746526604fee42. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEHK12400887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2118d2d2086b011d93d6431abe1a7d9d54025658d1ed272be8fdbf84ed904c16. 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/DEHK12400886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d0fe4636d6d28d414c4571d96e0c7db5961234953291a8122af0bdcdf40bc2. 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/DEHK12300868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6ea034cef11da894e59dc077c55558a0a7a57558b4870284f30f934d0ca95d. 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/DEHK12300858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bd3bd89dca58ed6e6684b3f122607c099e7a978d2b1d12a533e263248bbcfb. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T18:05:28Z), 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/DEHK12300852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bda900ebb314fd059fc39d5fec1f26edadafd7823580ec2a6cc3c5add1b5b2a. 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/DEHK12300847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8012d3bd567d7477f7f29290d36df09f9ab4ad6949dae89277e6e49b9ad3b9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEHK12300841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb285b0d6b83b378c3ff73e4b5b867deef3cbf38ca6b719898c577b5e19b9f53c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEHK12300834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0779c7c987732f7bd7c44b0e1cb5973b7573320ac9dc5447689f953fc94fd3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEHK12200790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4302e2b483f897968a0964c1ccea8daa42335cf04601ecc531f45f09115af94. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEHK12200769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe5605cb662c2438e56d7059481085afa9f219e72dfdf0dc3352acb0d88ee20. 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/DEHK12200766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7731559df034cd7a87f98a407a142f795ef68d6c7df351708b70c1b10c4b7e3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEHK12200761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e64fbc9dca16272114baad6fc39bdae92e49ecd6c2d3ae2d2a7d111d573bbe. 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/DEHK12100747.