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 0x8be229d98aa3871083f8d4268e45833fa2f621a2d25f76b96ed619d16482cb7d. 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/85a01482-8d14-4f19-aa82-1d0ef4ebe8e1.json and https://artists.proofprofile.net/proofs/artist/85a01482-8d14-4f19-aa82-1d0ef4ebe8e1.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 0x694d531e39543cfc37d4e8fa1d863a08a30002fbe7fbd1fa9c750865dc0c3c07. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:47:00Z), 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/FR9W12132068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee7a1c0d7b2069f780c7a085b4e88e45e743d38607b69068b020554c5280d6e. 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/QZMHL2062972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec2d8b5f771423d05befad620caa5d3c8d6a8559fec1afa943f8890748893d3. 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/QZMHL2075563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45f63cc0daf1088e01271a04fcea300e6f9f8278a0693e4a14aeafd88b88b86. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/QZMHL2042709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5a4332282e702530eca41556ede1af290d495e4004a9c605be8534f694a6a9. 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/QZMHP2029532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e80d156c0eaf2e1f5b4353d02aeeb8302141c1ca49e2279f663d5cfc0961f2. 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/QZMHP2083772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16441a1d1d1a368e168ed2a73a986b6574a3575a6df6fe17cfb84d3a9eddef95. 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/QZMHK2084637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74979e3dca3500b73da22684204428d5ee3a538d8dfe94156e978db15549456e. 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/QZMHM2072434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c20168f506c0f8d74c357aa8fb9e7b4c743a60da1b50c7ff91e533ad832f303. 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/QZK6L2377510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5cf56b27a44980b2eaaa4b0a40d754f1726ef2645833647eab71ed3ff743d9. 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/QZK6L2377511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc39dd2d58a99a909a9fee9bcac3b4a08bc6ee708da8c4f8bde401a2458fee7. 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/QZK6L2377513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe78a69e712484b0a3e24ed0c6e0aecf34a6167b78340c0716d2966b16ddaa9. 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/QZK6L2377514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb326247b180ce2ea1c92a5d1b0d52b280b46e455fd53db0640ac37d89b0ef8d3. 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/QZTAY2489529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5681cd4754ac3d9fd98d5237fb8021f15200c61ccc93f5b43a04feb33fcced7. 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/QM8DG2495451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2bfe92f2bc103570781ddf6c1f268cfd23324b1e1b76fb869b5f2e6438a753. 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/QM8DG2495453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf261641f6e3e066f6eea82a4cf470f35e409babade6d574789d1fbac1d5860cb. 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/QM8DG2495450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d98ae2914d8b3fb2fa78bf763e6f1e1560d7efd438d0fed4884ac1c2e838965. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:55:11Z), 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/DEK602415301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ad584d13667be368c475658e8b88eee7f46c8966f222fbf770d2238edc29bb. 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/UKL9R2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e840e33d15de0726a08113085eb7993f20a855c32849d1bb2cb45ecab30c75b. 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/QZGWX2202333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f59f4a5ac181e2e25f051ca43bbc4702771963ce3d32b2d3d9bd3db0141bb8. 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/QZGWX2202335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa4c36498c28d949954c336f22f39bd0ec7ba65d5e50eedda0520a2c3a508b1. 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/QZGWX2132716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8f0cd60d926ce8722cc222d7768d4e95899969cd3a0018a6153422d0d8919b. 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/QZGWX2132730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26ffbc7c48171bcee051ef7c194ee8b1d532488b2fe288678dd4230d4896471. 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/FR9W12011385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b7c52e0fb03fef667dd802a1288a40f01595b8738260cbeaaf97ed12a35fb6. 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/CA5KR2300311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff0d8c2a36dc1f397da0de5bedc62e068a7e12555394c794731dcb75b8c091d. 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/CA5KR2300312.
3nter 0n the 3ternal acid rave - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e8de5e31c6d83f4cf67e0511f7f496e39961b6d3e39a6a2f25cefb359fe0e4. 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/CA5KR2300313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38df02e71bbb02a0fa17dfb5fb559f5e02cb3ad4ec496de84734a93193cb10c1. 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/CA5KR2300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cba344d53e559217c58d85a252c21273817acacde192d0dcc361946c1c52be. 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/CA5KR2300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbd4ba428b5889293edf3b6e99725c4495cb9e57ee9590bcf0b65c77b9f4224. 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/QZNWU2482766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2087275a08abc4f950c4a5b358024c89aa5706fff684cd675e78277a69ffdd. 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/QZNWU2482768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd080b11225ace4c9e41b98c803b3fdc96ce08e131cd94f52c95e0251c3575b4. 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/QZNWU2482769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a2fa17ef3d1bdb3f31640bfe3e3ac1cc03498006721a2045b13668458784df. 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/GBSMU9867184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ec44d9e859b6f0299f802858e664cdc449abe208e3f5dda79b12d47a8f0833. 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/QZK6G2498765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c20004acc916344e03e6a018a8e99e946848c3102bcd4cd271374dafaa2f90. 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/QZK6G2498767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2ddd92ff50ec6b00fbdee673c14544c8767aeddf8bdb6eff7c81e545bf4fd4. 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/CA5KR2304352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c376f62c9d6eadee37f3ac7ab3b6da23c9f2e686cef0f44040141b668702e3. 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/QZTAX2264796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9814d416f5836e48966ceef8eaf62404ed575348336a108a81076719c9c853. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZS652249679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cacf1ae4214390533070b1de037096a45ac49fb1e9a1056e936cbaf04d3d8b1. 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/DGA0S2484511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa654977ff1bdeaf195f9f0d484b05e82da0ea0f3c79704918894d8e7bd841e4d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:01Z), 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/DGA0S2484514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3990677994d878ec5f22158ef5d859909ac9f125fe3149ccbfaf667d518300f2. 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/DEZN82133810.