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 0xc141d443ac0e449086689454123a1cf979275a823d3478b6472030f255080d93. 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/577db79b-7869-47d0-995f-d268fd5b54f3.json and https://artists.proofprofile.net/proofs/artist/577db79b-7869-47d0-995f-d268fd5b54f3.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 0xd2b32759cf620b9771ebce39fe39ae689dfa97189acd4c737662d24b2261e04b. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/CA5KR1714095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33d39ced858d279cc6bac80f1b2b90753f06a514f6e4427ca44b80772d572c8. 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/QM24S1813654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56b22b121f2bcedff2b1da80f987f82975d0196f7636735623dc1dd840a5a03. 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/QM24S1813657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fef841a65ca6a023722e48ba26d76181f3fdff8ee949e5e3405efcc774ec0bb. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QM24S1813658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e1a6d5571b24fc9be642af5ef15412ef30f2770cbfcd991757119142c641bb. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/TCAEP2080703.
Chasing Thunder (Inspired by 'The Outlaw Ocean' a book by Ian Urbina)
Chasing Thunder (Inspired by 'The Outlaw Ocean' a Book by Ian Urbina)
Chasing Thunder (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e5115011a5eaa9e6435add9d4d51a20896f02e63e4c0cc24453b811000f6ef. 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/US3DF2120584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e2be900ee1f9fc5ce101146bddafdb4b20b035ee008856c41e41c94160ce7b. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/FR9Z62100218.
Looking Glass (The Noam Chomsky Music Project)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7317c935cfe4679670a1f442655b74b9389ed8efb421df6b06d3ef6d8c3e1784. 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/USANG2295918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27f9cc7cc5f0c2fdbf2502f97038099e3649a197403eee7aeaaae9a75adc914. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:45Z), 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/QM3DF2202422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97439af67e3952bd849f93780633c69e4ca3920506e74b3327b300129cd3baae. 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/QM3DF2200741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ad1707b804c8b0b361ef02f5504d80118bf6a28a40821ee4d53dd32d8d444c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:18Z), 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/QM3DF2202424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d508c99249a66b16c737ee8274fdaed90c2bfaaf0c3a32e01848044d63d7165. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM3DF2202425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a06606414b1b8e8fe201fb53e2a0495974cdb0ef5d04a118d8fa4484f55872. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:24:46Z), 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/QM3DF2202427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa5b11fac09f59d97df604f8f9534a4855f6c6c724b6a0486e4ca2625ba412f. 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/QM3DF2202428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409bea8f1aa30fe6d7041a1fba09e7c0d47fb7fecea4514ea799c365e21fc5a9. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QM3DF2202431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef317d9ec907c21eaa42b5697989ea5d066762e01181d9979a701054441f240b. 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/QM3DF2202432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f913dd44e3f919b6e6cbf0ab23ea962b0b934baea0016b8b33da50b8d2ac4c. 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/QM3DF2202433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c8c1b764d9a2a0cc5858375f8c4dd4611fddcdf11bb7c42bd1db857701884e. 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/US3DF2472889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a7a604cc43a953bc3598506c581e7f60a61dee5625af4f1fbc734598592405. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/US3DF2472890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0402354e8aae2648cf27c3b389d62efdd10475b5d0243b8b896a6cca0dae72. 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/US3DF2460897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca515c3362dcc2be2a236147ca9347e88807ee93a4dcbdaad4a7d5f2472b163d. 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/US3DF2472892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62da41ac37e6302a2eac11781fe9f9bc379638e30a46148abf42f2f2bc31b9e9. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/US3DF2472893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477e3f1722afcac8ea6d9f12340b0a463bf905fa74caad02ae26320ff5e96dbc. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/US3DF2472894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa864712936ea5c5a9a1af54191d36538a8fd8dd834715b026265a9fb79a1ebf5. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/US3DF2472895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adbff73f146ada23fbaecf1de942fe0966c7889dd31e0a78dbd6e1dabc3e1ee. 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/GBKQU2237566.