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 0x279eca4d553baf095a13c2436e5503896612c85d90beabecd10d1589db1a77d0. 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/1d335ee4-c7ae-48c1-b938-e6db1d910c96.json and https://artists.proofprofile.net/proofs/artist/1d335ee4-c7ae-48c1-b938-e6db1d910c96.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 0xe52d1b5c39ff01e6f3fa21f8e1099a1e2afc1371b29a38ea8fa17dc6c67f7b68. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBLFP2419300.
Boom-Base, Volume 4( Back to the Streets)
Boom-Base, Volume 5 (Definition of Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ced424240eb842a2946f68ac51b6e59ba0339f246f19c0a95e42a4e86d2305. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAEZ2095457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a23a937e721b0f1352b1c7b35fc8727c8b9b925f0d0e1de33efb345e84adfc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAEZ2095463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9047947235909ce9850024c81bcc58f619ea848a2e4fbf597502bf91f0f972. 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/TCAEZ2095485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a95e811ef3e578802a1ef181988271548b1e3b4ffa1d8f38003de3c633cd69. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCAFJ2105468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fb2c0b2795d40eb8ae37eaddded1afa450244c772e3451a2a467b5c7412644. 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/TCAFJ2105469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba300b51628a7310a531b02b02bfe654634192d20f3e7cded08dd3bf7d16fe2. 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/TCAFJ2105522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33a0506cf5056c9f25450829ded18e47a65b6e70b07e5b65983a67b55506102. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAFJ2105537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c79e3293d0d7d2fac13ca070badb494a7c4cea4fc192bd25e651abb4b2623a. 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/TCAFJ2105640.
Boom-Base Vol. 8 - Back to the Streets 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915dea2c26abac8c86e7e7f1e6d4bee1768e07e714d4b9e086efd629fc1f05a1. 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/TCAGA2256083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18825da0bc9fbf29c85ca650ac443ff54444c6a5e636dfb7556ead25e470f03. 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/TCAGA2256134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c2014fb594deaaa1dac5ab2ce89d4ff0280ddcd434b8073140a4596764f90e. 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/TCAGA2256183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ab069a14066520dbf1acc7088a80d1b7892576162d8350e814bc6dd100fe2f. 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/TCAGA2256235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f73e590bb5c84d8256570beca788343b7f324ff803a04cfb46568f1a14e8a4. 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/ZA82Y2300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9732868cb23daa4142df8fd7a640a9e54c52c32853e39f59f7c610aaa19bf6e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBLFP2419304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c31d7f0900d6961cf058c7889bd190a88255ea03c2ede9c5854a6021c6cfdb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:59:25Z), 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/GBLFP2451873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b73269eb17b79203d06b8edfda7914e2cde14ac674c05985c57a3f93f722c13. 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/GBLFP2462111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d74a584503b189359776a62a6f7783884e95cf1c6d26d8494d62c66cd9831d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GX3Q92466758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874a48d5aa2e2881336e2d8ec725a9695478f0ec5818ce6d463dbea555a64333. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKXN22463862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c829672488d0ed3642e5b8ffa08f4fe9e9b79b36287f0e88930c0bcf4e17754. 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/UKXN22463868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183f584a4cb71dd27f8643803cca60c9cddec7002fecdee36f9d6f028fc48c61. 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/UKXN22469568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6960a1f1cdf7afc37887bad9b80a4abc84ef9baf837c877b05fff13d023651b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBMA22496734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3574bffa15606a7839e36d0de72db907a4e2d52f44c3700c36004ea285f77906. 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/GX53U2394776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ada52070580fe5b56dc7ca9d3f0586d13751410bf7425cf71a1e745686e4671. 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/GXF9Q2407698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4434341a5d0310e5257f673948334225e4978452e44215445f132a87e3c3b729. 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/GXF9Q2585573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36928ac437db6bd3cf985e8ba53d3bc23d64eb1b7b575c8aa3cfa2feba796950. 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/GX3Q92533914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1243622c6258fbf1a3dd90748fa24cfd5927d8624f6aa82612d99ee833c473e2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX3Q92596106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5222ea996319291aa9568d3fa1db7fe06b5f4861520dde58f2f4f8a33f4e33e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/GX3Q92596111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0e3ca225d73289f8e409a2c166e4e4f4494fb91f977fb16d67a1a4377da711. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GX3Q92596109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c4c3781f6ae22b3d420086d41d99e55bc1192ecb402702064b013c2d40154d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:51:15Z), 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/GX3Q92596108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3853b7fa0aeccf9dfe0d5b88792f8f1a18576ecefec3b33533b1565babe06d. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GX3Q92596107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400ef04d36b384a85b63452d2d60e3ddc14d84c50c5b41d4e22e9278dac2b704. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GX3Q92596110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41b04e605f6d03765ae393dffe5ddb1cd8354230271e2db430523ac664e9f13. 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/GXHAF2500567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5868989adba1dde5434ddf98206084e301db0e2c44983ccb30fd754ac127c7f. 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/ZA1NE2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452fed3f3104f8499d88050a51d7a6f0180e7949fdeb27f86ed28416be36cc25. 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/ZA82Y2100280.