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 0x49416d24b5879b524da5cd15cf4a57909dfb03c8d00e138200940e404203540d. 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/9a8e4d31-d37d-4aba-ab7d-28828e22eb03.json and https://artists.proofprofile.net/proofs/artist/9a8e4d31-d37d-4aba-ab7d-28828e22eb03.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 0x62322b1eb851817832b54dc857d739640699f1194672b014accd80e60d9329c2. 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/QZ5AB1896589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba4e1a65b82a5e22bd6e510d920fbacf262a6448b6426f55598850d73c22656. 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/QZ5AB1896590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5291d75ffae0277e228c33fa4cda247edf8db463eec8f874fb302b9c625e365. 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/QZ5AB1896591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceef64c0ae479b204638e88308d9e84055f283cc3f769482145d1de616d347e. 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/QZ5AB1896592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dd4f9f7a35989fb0b49c3b35ec34ed5cb715709c0db995a63f6a0dfa12f6f3. 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/QZ5AB1896593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5f1482b02c78c902749ad56bf04668d0730b04257e4eb4c862730f0970a64e. 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/QZ5AB1896594.
Tears For Tasha (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd478e07796640e3294a592d4c64361c0bc575ce9bc0f8845b268c03cec1aeffd. 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/QZQAY2485510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad310b75955ee71124e4acbf9d2055a57c144619ba4ffba28cc9142266e7034. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZQAY2489540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71baed2483f5077aa3ad9b663eac2cd5e62b7e48446abc0ca9442d118380de61. 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/TCAFN2124472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590c9d7f3c5df8c26ab895bea04aed31d8ca07da784d36e1643e8cb4497bddfd. 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/TCAFN2124492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1c23970059f74da5f9052c13efecd7341b29d7aeb5cccb17cbbb91bc9d2fe2. 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/TCAFN2124497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac9ae5db588d0ffb1a4075971a4d98316daec3ad039ad4f3a7ef9bc496c0dc8. 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/TCAFN2124506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672f0f29199403ac28e3ead5af8e011e57df7872ecd5ed799e9326a4a09bd380. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCAFN2124509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b600cbf2334e235ce22e13349f791ffab2b05a6d688537cb30cded39dacd94. 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/TCAFN2124534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaf5770924c6e916a64e8dd40108858802d825e8c67e826892dc8dd0bd5acb1. 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/TCAFG2067420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3331c708d63895f6b167e234872d8badf675fc707d6414edcdf0943160c99176. 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/QZQAY2421051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80dcc0ccc4a50849578f961dc9d709b27185be21362a06ba8f7491df76ff6ce. 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/TCAFK2176368.
Need Some Time (feat. BSE Count & Swaun)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf32b2a37bab59532b3c6c4413ccf939b1e985e4efced697751c372f7f73f0d. 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/USLD91722630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b0fef85d1ca8b478b95ba9cffdbc9d180bfbb6d93dda64cf76946a9b9bfafe. 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/QZHZ31912059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863ee7c30174d86b97b6eebcb6dd0910cf5aaa69b36d51c3adbaad159f5cfb8d. 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/QM24S1922586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11badac03f6c703b9879ce14fc20877b6d4b9ec0f3236c0f6b9a477a0047141. 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/QM24S1921987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bb758ef2984c5fc950df18d5bc85b19e32c2f5a9d31a014f1f5f6e15bae689. 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/QM24S1918778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fec6f85d22985048971859e265fe1eae519edd0f7d916d282eabf41dcca5e91. 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/QM24S1908049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb2491d5d68a6d41017c02012dbd87ac0fdcc80a25e34cc4305a9e6acac95bd. 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/QM24S1902786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2453233e4822d5835fe4297bacdd74cbb56c951d5550ae99ad00bdfdfb6f493. 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/QM24S1836188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f036adfb5a8c29f3d4aa14312aeb024a2ba06d3cf80ac5df146ee3cff30219. 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/QM24S1834841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da5e687254828fdd0708362bb6f0c59972cb81b4f7c4c3dc7a389e2f2a46d69. 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/QM24S1827825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a6b359057e5638c8c680a2cf3e8a32977ce8ee9d518f93d7a7396cfaa7bc3b. 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/QZ5AB1924511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceef64c0ae479b204638e88308d9e84055f283cc3f769482145d1de616d347e. 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/QZ5AB1896592.