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 0xd687ec96bedadc52c6ed27c8d82eef0d334e1899039e9b72553562f290e98ba1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/601df157-985a-4e39-8bf3-3d2137191156.json and https://artists.proofprofile.net/proofs/artist/601df157-985a-4e39-8bf3-3d2137191156.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 0xfbf454dd0dfff5bb17a71e1ab77662a517991a01e739857d5b442178b71d7366. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USSUX1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0e02f84255acc96c11beadf99bb7a892261bdad5781dab9ff7c6b3585087ce. 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/USSUX1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1f6de149644a3fae236dddeaf511fb07c36b39aef74628d2a05ff3f17808c4. 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/USSUX1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd086205831a8d76cb60c623421b869317d117933aaf91299b0defe27f8fb3247. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USSUX1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778dad52f092a755fa91ac0f527768fe6c976def3c94353896652427b7e04ee2. 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/USSUX1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2504038c5fac46d9a13683801cc0dc3455418368c5b3b151eecf0c2c84ef43. 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/USSUX1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714ee4277ac2f9e75c77d3d78c4f58d80ab805bd73cb5cc2c6873fdc3e345146. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USSUX1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4443188cc9a84d30cb18d7669bdb50bab0dd6c977f0264e40352abb6d0711c71. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USSUX1600013.
Alter Egos (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2d06ba69e40e47f91e38729a8cfd6aa8a4aae24698b037ad174b3536c8c3ec. 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/USSUX1200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0717e0af560e7bc365e6ab7e29e31d04eae251a29b87d7a901ea949f4f7d5b63. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BECJ72300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccf961e3ee0ae80fee7a45327c6a4caeca8b4ecf96972710f7a0c636ff99cc4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USA2B2320156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5804f867a7b7083d7a4628e95f5dcb076ee78e0962d89756bab18f2244fac73b. 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/USA2B2320157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79084cad15720a3e92d6b11002002ec1da02bd29dcf2d3a7ee23592f096cf02b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USA2B2320158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdf7bf24356f5330585797f6eb1f8694d158fb21e9adaf7ccf6c09d7c76b9ac. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USA2B2320159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a50815014664eaf61577e6213a6b07cf7148031de670234a5fe0a065850314. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USA2B2320160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bda00df380826634a6518593cff0c1563b75ee4f84e9b541074eeb484c27c2. 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/FR47Q0801990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c41384e24613ea14934ad04ca93c7941023beff6d4524b4f83a8a4d00de7ce9. 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/USA2P1552264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b52e818c9ba0994e3f3ae3fefbe300272d84c60aaa06b90fa786c8cac7f1d9. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FR47Q0802120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336b0e7d99b983d9ac9ee3687a9cc4ce5f94f895fb4ae1e936cd6257d26fedc1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR47Q0802140.
Happy Xmas (War Is Over) (feat. Sean Ono Lennon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45eaee359617515c0cab938b35c186dcbb03c7494213856d90ac6e42d230b7cc. 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/GBARL1801766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bda00df380826634a6518593cff0c1563b75ee4f84e9b541074eeb484c27c2. 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/FR47Q0801990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c001045a84403c1d0f19155428deb8bc11309a41888cc44508526a3dacbac6. 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/QZAKB2313092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f7d498379d17947b7e8a4363926d05b897fb80c984d7e8a4f25c729083a5f3. 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/QZAKB2313098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1ace66b56a8907522b566aab8fecb60475c4f2e8322671548add48b8d9f55a. 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/QZAKB2313100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4771d89e9b166a302a19a6810e378e9f814cb2f84ac3bbf0f2d1a6689d249a61. 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/NLA320019184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e0a24de89a877cb9dbe59f4cc10bd8825df0691277dcec44f3c9820ef8f2d7. 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/QZ63Y2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4798eabd8c2ff88bbf7232bbf5045caf83c64df97a99743492c3f6a3d7286ace. 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/USFMA2300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8300c0fa9775f32912b93795fe45403b83182141ba88d33c86b59937221bdbbd. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USCA20400249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed54f5f74f5860e736db7c85f3f4094961b9a4d119a6d40a520fb9d8a05accf. 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/FR86U1100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a566a0657054cf8f36a3238c799da6a15487d0937f8218586f16579831bc05. 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/FR86U1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a08e5211fdc2cb5ff0dcab10904c55ba27e817d6f2b30fb7766523fa9aaf4a2. 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/FR86U1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e58ae4a0ba7ef74892588521746d52adc3111396261d62c1aa25415aecfeaf. 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/FR86U1100012.