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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d16ea8840bd0a3f766c11504532cec97ab9ebd5a3358541860400f1f0575dd. 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/98b75c95-1c0c-4407-901d-66fef97c4d88.json and https://artists.proofprofile.net/proofs/artist/98b75c95-1c0c-4407-901d-66fef97c4d88.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105c1a46bdd82d003c88c8807d3f32dccfbb1b632743d50f0ff8c78b2ec3a88b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCAGQ2262442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2306a05c2abcc629d0197663df1c88b851c87a287dfbdd61d5aeabbf56a584b0. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAGQ2262448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a61bf849f3dfea9a2109b97017c00ddb5ec6164b2373a9b4cc54b915dddc808. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAGQ2262449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5945e39cfd60d43f3e973460aa57118bf8bd2a0b9d540e29b6a858b522bdf614. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAGQ2262450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71771726633944e1065e1b97b46d3c2d9c2b4d04a841a605dfb3adea1e7ac4f. 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/TCAGQ2262463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946a013aad153a0ea0fec0e45a15066b2cd41dd8d2ee85fa3420e4f0fdb083f2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGQ2262465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609e705dca785d4ee69df29f78a492468c1d26dea4bb1262d86f71e763b04056. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NL8RL2460755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0525c448047c9aa3601e16682c10d9fd460f581f56453f786c56bf41bca1cf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL8RL2460756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea95c9eba976f042e5eee48f4ddd5d255abd70f0e768bd892faf79145b66229b. 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/NL8RL2460757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e463ab76d300ea6f82dfbf9727ae2cbdd38a2afa68ae1a5a7c249e321f82a9. 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/NL8RL2460758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68760756c864306c600ef8072b9f2f726fae40b43d6d08f55ec5f0e31753a86c. 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/NL8RL2460759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94e565b5797cc9d7237571a3b19aea9b22e17b54de27a109fe6116fe46d856f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL8RL2460760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f2ed29b97b5c8ec9224b3f79ba45d469f8de7de7e9a797aa18061b16ae3555. 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/NL8RL2460761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a6af34c7f4792c0420e6e73726aa86ce6cfbe4a1be619b52f1eab7694ae344. 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/NL8RL2460762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acb869e0d10e309a7581c295e8cbc0fb3a26ecd89e79faa6916ac94ed3d12d3. 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/NL8RL2460763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed9099bcede81d6e1becbb3ab7f09edd7d3a6c6070e043e8fb8527c24eb9416. 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/NL8RL2460764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eff1baa7b9edc4a20d6f421e38a135b750df69f657f4551c8aaac94c395ebc7. 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/NL8RL2460765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd112c8040bd46d461703fc0c32e65c91fa0249e7b8d2ddee0e802dabb71c5ea3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL8RL2460766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbc3d05d6f000075e496eb6b07f6df4a1d2634ebde1175ef91d3166592bf8bd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL8RL2460767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabec8ac649c88e60891fe950d38b51ed600194ad6109028ed3aa15a48b60821. 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/NL8RL2460768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8b43d30c8a2b96d58cc065749fb3b4932c613891d6d9ca0b9d2355cc790419. 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/NL8RL2460770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f854c2b516321c861f850faf74eab3e24f650e8ef0151a51df46ce3e2c43ee8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NL8RL2460772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444758481fac806c4f376da96b2eeb13b2b37b3631131d1fa41f5a7ab4f17806. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/NL8RL2460774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ae26e102e8f596ef8dc7be690c9a8dbfbf1e6da44e7fe0d503359f0d8ab377. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:43:22Z), 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/NL8RL2550839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98eff7f10b6e8de5b1f36c8d1413b9d246373c18d9d35dc6ebc3efd7d6ae4dbc. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/NL8RL2550840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea1fec926f32436f75db3cfa999ca2a33b36bab5ee87fd4a888cfc25545d6d4. 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/NL8RL2550841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bcb83ca7eff7d94f8bb524478e51189f7a89592a5933e278d207a374beffe3. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/NL8RL2558188.
528 Hz Positive Transformation - Loopable