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 0xdef028c0a184b38f1fac44fe93701000afbeebdf7546860ab9a6093164c4a5ba. 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/0e2125fa-003c-46aa-b793-b38ad0f25f2e.json and https://artists.proofprofile.net/proofs/artist/0e2125fa-003c-46aa-b793-b38ad0f25f2e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Slow Films in Low Light (Re-mastered 2016)
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 0x9631727293d547e996419e427fef661cf6da274491dcefafb403e5c3ad5cc393. 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/DEU671000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6124ca1b64134f47ae23943b16e7a407eea95b6e8f823fd60dc508e6427f870. 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/DEDW60900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08efdb43585761d44356645cf08e795922aaf304ce941703195f5ea273e52de9. 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/DEQ200900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba96aec1d0e01f7af020125d7273fccc1835eaba5bcec683b2e9422fc48c44a5. 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/FR08Q0300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2936b89257e5cc2e69b8055c582e9a5b293c462b0bbbbdc5fd4806e0df4ef7fc. 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/DEAE60900758.
Keep Me In My Plane; Hunt You Down - Dj Koze Hudson River Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1f20714a9948860e63a9882190d3c3f0ae2af37d18b3614cd11403012bb6fa. 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/DEBY40600469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922c3d247e1b8708d08232ad4c3ddbeb201e212f840b85b5e58620b8d7aebcc1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:22:17Z), 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/GBCEL0900699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cf0a10fc5d83b63b99421673b51bd44bb8a57ea988540b9d72bee0b3941720. 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/FR2T01000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d128493c9008503ef98ece362f842b6e585589932acd1fc099f83e2988ce2ec. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEDU61050007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692bcf771c4610e967179fd03b1a0163b14af74560d92175d59d6f281902de47. 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/JPB641400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576fe6a628e43b6587fe52c79947d31bb84fd6541ff3a166e863500bf717975b. 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/JPB641400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41849ceef2ce041e5bf31f8b3086cc47d64b2afbd52b9ff0924869afa4ca574f. 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/JPB641400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc884500741ba756543d4d2314f15ee024bc8d113e0e4a18cfc45eb10189b6be. 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/JPB641400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446faabac8871b0bd19b0bd744776508868e8189f61c43b704ff54465797bdb8. 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/JPB641400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaae4c4df1b284caf983afafdc03ab13d9491d4094de0b57f56b9f03e5652d7. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:47:15Z), 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/JPB641400158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92f8b238bfbfc583df3700df29d7e50ad62ce318694793592f5f086030c449d. 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/JPB641400159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936d1c819400ca8d40ac471120c150449484c4d0558bc781c294722e17f2dac5. 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/JPB641400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d4fa26c345bf9615bd93cdee6b6de3682c6c6df806974ef7e7333753612342. 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/GBKXH0700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d54279759f9782934e4a683b2300230bfe2fc3d96480abb0382108e64c42c8. 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/GBKXH0700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d54279759f9782934e4a683b2300230bfe2fc3d96480abb0382108e64c42c8. 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/GBKXH0700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0026b99945a1e7ff0712c2d4a69bc8692e85c4eabae6a5d1e616687ea65f7185. 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/JPB641800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4a71e3a04819663f040ceff5ec7a2010e20d3654175bb7a7c4173203baac14. 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/JPB641800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80ea2357a9ac3314e91db7d9cfec0134ef104d351141b8a8bd2221c86b4e5b0. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/JPB641800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d95df5d7cea10ca0bbe3c8c515c226209267585dba3328b92eba5668584e710. 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/JPB641800094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd97cb03c9ffb98754776f265ae4ac592e4c8e59f02fd2a79317274fd4b7f5ee. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPB641800095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16513b23be344c0822b43dc1e59c52fc0a215ae940218caf157208cab7fbdb53. 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/JPB641800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb794c9a86d6d765b7f1b612fe83a22f8231485fe84fd69f3344724b3fa8957c. 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/JPB641800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957f2091e7ec66c3e0cc944a5e4e265e5d870fa9dd17e1505d9a5df6c67970fb. 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/JPB641800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef808e1bc0a237c4ba8a01c7df8b79ba8395487dedf534fdc3994fbc14d5d266. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USQ980900301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da1f7eecdbe1d7b52f7d145211940458c4ae625a1d7d95aac69ebc425deac56. 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/USQ980900302.