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 0x17f4382eb6a038efdc8c23c9f47803eaf20c72f9f6ba44d831cff7cd713cb107. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa2cec4c-2add-4d8a-a964-230bacab3422.json and https://artists.proofprofile.net/proofs/artist/fa2cec4c-2add-4d8a-a964-230bacab3422.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 0xfb3d8ac0d8d38a9ac527433fd4e6c00f910c00345f5d279816c186581bbe4dda. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA21865151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d41a0e682a6870cf523b6ab528c5c177eda0748a90312e7efb79958dc9fe2f. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/GBMA21813985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4515f57c9e35ae49a0b879b3d92761dca789989f95cbaaa5a34805f43e45982c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA21840437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cd90259a7e4b9bd418058da026ab9518f512ca660dfd9c8f9f19994159d574. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBMA21865153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce3d4bd9e2e0277d44029bae3b09f91ce7e24edc5f44b7859348febf534a580. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA21865154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ce484dc15691fd04a7185f3e1ce9cd56fac687b57f17ecaec39e582d990885. 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/GBMA21865156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eff614773fb4493deb260362d0726dc0e0d06380a28bf0d363796f5b4cad6f0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA21865157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4543632abba6d516e9925f4dc9aebc951a33062c761887c79284a8390c016c69. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA21887383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697380d28ee30a98783c5d5f4db30059e5b01c368a9b400f3669d9f7f7eeb29e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARA901600425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8372dab46a086fffb1352407a988a8eec8aa1a0181d4350863cb37930ed03b2e. 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/ARA901600418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb454a5fb3efbf93a208c884863aa521e74fed8c990ff4fb1252430989a16de1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARA901600426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87837004339bed6c821d451b601d78abcf3694a5d4213a2571e50669ca859778. 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/ARA901600419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0be84b7349f69f1e203b4779fd245ade7d7b5502546a108e186aae050f58cd. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/ARA901600427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d4b22c2535bd62110f213c0a2ca05d20433f8d3dd94a5037daa9400d31b814. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/ARA901600420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3ddb413e2281c99c6174b8536c876d56803b854f6d5bc157ca9fefbe1e85ab. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/ARA901600428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5002b19e3d4f30ed98bde2fa4663a704b14579b44274a457b6f2b62a4d4c6c6. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ARA901600421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c830e11cfb1af56b80c1168c616a90468b8debc1e245f49a4cfa24dabb1f4c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARA901600422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b807e3c32bf70815589f23ad29d6d4c47afaf2d27d5caf48fdc684a9eaba77b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ARA901600423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991693f0c16a5fb1cff8a1ad71716192cfbc43de8295896fd5ac52884c6e0c8f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARA901600424.
Radiohead in Jazz (A Jazz Tribute to Radiohead)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce07c39e549f1ba108cf3c49e6afdca73b32c5c97058286125dc9b18080bc6d. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/GBCWU0300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce557eaad8f8e6cab20b261fec25669cccbe7bde19cc7e8d6aad7d32c8853ec6. 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/DEA891001213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d90cab5d15e861fb1f8483c20a453e6453a7bbdeb4ed9d3e9ab2cbfc37c009c. 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/USSFR0517318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f758eb88fc6022d37d1748434cf145b9457c58d1be1aae64c8154708590e72. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NOMEA0902110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49256844ded507a2ee62660cb20ead4e63c0101fdba535277a751e3e8090e8e7. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QMAAK1551365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef38d850b8b99ad6264c7fdb2dad0cfa388a67868ba06029f6ee7c6e33ddf92. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QM9AA1500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa536d80c1103353470aec75576b7680e6b66d3b58210ab1bb860c70c2a27e464. 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/USHM91211465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1291ac66bd107e6d0691810f0016d7288a20e16ca5c6844dd1a3e929fcf52f. 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/FR6F31920000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315faf666b4c0d7f4a9e9b56444cd0f84d71ae6b5924e165412255e67752f1fc. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USHM91203944.
Suite: Everything in Its Right Place / Pyramid Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74aab23bd87de8818b9d021da074c78fafdfea6005b4a34f100571b8a01add9d. 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/FR6F31920010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d4b22c2535bd62110f213c0a2ca05d20433f8d3dd94a5037daa9400d31b814. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ARA901600420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c9467f8d7e0cc0717a9ca47180218c6f1bd5f6a107a302ff02ced623f7477f. 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/US25T0810770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2da82fc01010e164ff3673393972f1c9c08e50b499cffb1c941e4fbd881ff0. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/NLAA10600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991693f0c16a5fb1cff8a1ad71716192cfbc43de8295896fd5ac52884c6e0c8f. 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/ARA901600424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bfd456f7fc8bdc8db92cbaf54d917d3091b81f59bae2db7891792d9edfc8bd. 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/US3D60900287.