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 0x094c0b4fd05e8ffdf45f18d080d7479f96f3dcaf35282237e80078b7bfd5a8ba. 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/5c421797-56f5-4ee8-bc29-5a2481ec8a80.json and https://artists.proofprofile.net/proofs/artist/5c421797-56f5-4ee8-bc29-5a2481ec8a80.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 0x22eb559b34215d481c23a8c69c7bd59174764ff7304d29abd0a29ae1fea550ef. 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/USHM91778002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33ba1cfbd93af14847714daafde78dac3bba07d1bdd791500cbcba951bb5dde. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USHM91778003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8483974f3d97405fedaeb59f833c60b08be0f8de95f88ff13295cb0da7e1f3e6. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/USHM91778007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77c03e964dc8e279d21ae699755cc3453f8374f36dfe0b6a699139589692afb. 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/USHM21895265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80442ca1f167dce322e5b1f84eb3cd925e47db74e658b2f4e9ba5d961585c415. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USHM21895269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe697bd56385a83df454f553ad3f63932b084ffd01d99928df96ab333ab39ad0a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USHM21895270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5a6eb1cc6a6d43d27e6856a1acac4727d825960942b653f6f7266fb452ab48. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZHN41916610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5129aa8293cbfc1768ca2e1266e4b67a6445eccd1b2d8c74caa1b56d1776a37f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZHN31933250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4ebd5d96f1e6fdb91f01505ba043e73784076f585bc19950fb961e0600fdce. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN41916611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5293a1042e94f93829362db4936a3fa5f40541d9187092fb36c627780f6cfb18. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/FRIDO2211476.
The Summer Isles (Reimagined by Philip Daniel)
The Summer Isles - Reimagined by Philip Daniel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035bccf961003bdc4805ccc74b9ad7d2134e3ebe8a36eab44dab94d53ec12a0b. 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/FRX452333799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdeb7e68eb3bbe283d022c4276d071bf8340b7a3f1f80808d03139a43139154. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM24S2401561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4049b4da9fcba7461c84e88a0012170fd5bded2861859c1cea54670d891b79c5. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GBWMY2400820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349c692c9812ca1fb71857857583dd0b7c037b09794c878a126b13c04c7521dd. 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/USXG92400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4878d216a46deca341f1a01de1b6ad6af53e1b86848e88ad7391c8249aac87. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USXG92400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc93218662458377846a7c4fd7c34ba7447e8a4a9a19eb1bde24bab4b3cdfca7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USXG92400192.
Song of Myself : A Chamber Cantata for 3 Baritones and Keyboards
Unfolding the Unknown (original ballet score)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37c8032b08282e77e282667cdc07ee8916f3202f3f966c7cbae4c355c9104a1. 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/QM24S2502974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca6df52a4ad414d3aecaad9009156ef7e217c132869dd11eb6e689750082e66. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QM24S2502972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5a424ac0aa5c46ef70156a2fc55ac707e2093c3496066d578e5fb7f2cb86e5. 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/QM24S2308603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035bccf961003bdc4805ccc74b9ad7d2134e3ebe8a36eab44dab94d53ec12a0b. 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/FRX452333799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4b84ec8b447cd55b8d6ebe9b3f0c84bcfde3b6b84cb91f10465eb2f1c114e2. 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/FRX202207195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83580f63c965a58918eb4d8d69420b249588376c492cd52385183b6897e0ff64. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX202205032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83580f63c965a58918eb4d8d69420b249588376c492cd52385183b6897e0ff64. 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/FRX202205032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58b0a1661fddf9ad6ba992ed0131ae51ba5182b9e8e9bb29c490462b67599cd. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QMFME1972517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d160bc5d7d8d42314ad6d848eb0eb24c615a50a248785ca3a101b9875262a2. 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/QMFME1972518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb010b1ceec5574ca75201c769432a81c65efaf77c5285fc09d8c18c86fa88081. 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/QMFME1972519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa798290d880c2eb3a6abf7b04981f86008e739d25926012aa37e877df1de2b83. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMFME1972520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e2b187710fd53279faf4378cb9bbec533f52ce21f2275a0dbcf64413c018dc. 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/QMFME1972521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f19296e727b0aa575ff8d37bb64b551924f745238dd6b0a3bf1b7adade62f3. 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/QMFME1972522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26a08c0eb53d13caa775d3d23852dcd8f4e8bd5bc5d8fff122dc1807ffd153e. 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/QMFME1972523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad853b2174cfcada3e2bf68f5b3a19368881299de6d75f38ec1ae3ebd64c5be1. 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/QMFME1972524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ac23af847f05deffcf9b33c9e9109ae3c2aafb0c7b313e7844c96c41b7388a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QMFME1972525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035bccf961003bdc4805ccc74b9ad7d2134e3ebe8a36eab44dab94d53ec12a0b. 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/FRX452333799.