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 0xf6bf0367045ef7f30e0b84f9ccc1ba897979363ae384ac5e80bc63ae77d85a83. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c11a8fe-201c-4f1a-bc19-b2bd8a479981.json and https://artists.proofprofile.net/proofs/artist/3c11a8fe-201c-4f1a-bc19-b2bd8a479981.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 0xf9bdb6a896efcd5431b6da8c5d563c5666fac35ca0ef738921b9a0af4e905c3d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZZM92400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a3472a82b84170a75243ca7eb5dab71187bfd762ab63394de131d8f23ca526. 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/QZHNA2453642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc954ec7240f903e8118dd7b17cc05223e6c49bea2d10d19d3c4051dc11acd568. 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/QZMER2327610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f371b7cbced7eba1dd20536d8c8717e804f15f060b8eb9e03d0d0d67708043c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZMER2327611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d74c36ed5668e6f6d224153fcfb3b535487f2713758b8142548c6cd82f03b41. 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/QZMER2327612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d123e512ef0ea6899c60dbf1f1a3c832603c66c8f408bb205109b10ca3a632. 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/QZMER2327613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbce8811f96ba6bee3c2878ab009bec05913f9e519cd210a4c457d7a2cceff70. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/QZMER2327614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c53c1657a87e0ac51016101ba94c9646cd9ec9b288b386e2a1c27392c20576. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZMER2327615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7eb5c7c7990bc7c2623a973ea73d25e44bb017d3fdfb951d010b1997848e51. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZMER2327616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892819caf1654c26299c57c7097690e4b11f2dcf0395a1cb1948e08325899ea0. 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/QZMER2327617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dbbbac6f781aff61981dbe9de84f0abbcdf009243fa4b1b0c7367a6b1eb095. 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/QZES51952402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c63e5fd3d7dc23017482c83c5c04d8e0d051394f623418925bfe0bc17f84267. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZES51952403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c60d8a742bc339530249bd9dce8e68f55f1b4f8eb9c892c4d0d22704e7aebd. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZES51952404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcfd4f16cdf986e2f53e2c73ca0f5b08e80fa938666443ef9f4cf7a465d55ec. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZES51952405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5c4e3a868aa93b0c7ef9fd18725abca583eb44e2393b0b93ae6ce7b6006a9f. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZES51952406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778358f39414155b1cd536f54c40b84bf8bd16928363f53de4ee17ca22f7a365. 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/QZES51952407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8587696ceb5e4bf562596f210336d953c82c09c602e410691accc037a65eef0. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZES51952408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b996416d836f8aa26f431e8d7ba180b05ad34c671fc11daf9430d59053dd2e. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QZES51952409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603cfe66e52b9e0f02a11a590e23b67891ae191e99533e1574f3ab5c1ca3234e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZES51952410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26eec810cede7fb1699ce2b87c33229b72004f3dbb9e32fea42fbfeb0d24d8b. 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/QZES51952411.
Father Psalms Studio: Chapter 3 Sound System Cuts
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660cd5940bcd9814cfa8646bf7e25e14677c62bf2c9c12684ed2211dcb63d7ec. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USCGH1197466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73063d66b3e4eb398f2a21f15cff00242d3cbd0b9d9c913fe8626a1926968f55. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USCGH1197472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd311705f4aa49aa54dac0e74bf8b693a061ab17823fbffa4f61ef0b7b2bb5a. 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/USCGH1197474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ef5c64908eca852232315fb48cb583659832aa68a0a1bc1ab7b1c70bc5f5b7. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USCGH1197479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4893ab768df51828c096f6e60dc2297091fc5ca98fd07845c963db4aa9b68a. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/USCGH1197450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb2ddf672786abaadae2c3772bc30da62dd87bac1087d93ace09ed7c0afd337. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USCGH1197451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce7c538f482b6c7f98d2ed63f5c0fb5041120556626f9c46c16e4bdf37d0084. 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/USCGH1197453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7809f8040a8d63fdfe512d1acf2b8583be508181355c3df5131c899b3151e3e8. 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/USCGH1197455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485ab93533c418b4535a7c12fd9863a5c3c7cc603cd41753c957ccfe7f924b7c. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USCGH1197457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf600082c2125fdd128f41d567218db478edfd9bb59ec7156724df03871e78ac8. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USCGH1197458.