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 0x80707fff93a46f9795d85d2136799b8d32952d963d746df615ca7412abc51919. 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/25b88f7a-ada5-4f1f-b680-8202bba97525.json and https://artists.proofprofile.net/proofs/artist/25b88f7a-ada5-4f1f-b680-8202bba97525.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 0x47176a1a3437f3afa56bac2a4fc841e412ef5129b9aedefb4119c5a1340e2071. 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/DEGC61000591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8821ce126fdbb0bb2a805b87adc6309f8b7c799ea7e63999119731d75fcb6561. 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/DEGC61000592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1632e40459dce2575dc8a9e3b900d419a462f0c9f1e436c1e127288680a86fe. 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/DEGC61000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd72f5bb5f7746cd5afd65ab7b8102225dcb9754acfcc6551d4c12037b1a41bf. 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/DEGC61000594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37899edcde9444fd81161c0bcc02037ed61dc7a9fbb7f25f9c9752ae59de364c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEGC61000595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e27d2844572577260e504eb7609e90fe4af3faa04f8d2b24e2ca80465541e9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEGC61000596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee82d55a9ebb1685a186653f15ef23e17c1d6fd060aed2abdcfe8c5d502723c. 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/DEGC61000597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260bd2fbf28c469b59fb6a2d14827ba8b10c764294abda2d6d216208d037b83b. 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/DEGC61000598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc873729ced76845cdb25fc8e7e53b71dc186c11390729297679066f5ca9f4665. 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/DEGC61000599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d20ead591c7e4108fd9dc325835141520d4d66611b8824f71ed6ea18f03b469. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEGC61000600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ab5f5ae94c609388c2bcf62d1c82ed055db5225ff335f59291eeb7624ddc00. 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/DEQ022105784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5526272cc7d821cb868d0a6451dbdd520f82edc5d059c8451dc475d8226d2ec. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEQ022105786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351ab2b4173f856b770c6de2001e9d51ef3497ac3f091c5c5f59ab6e9552dc90. 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/DEQ022105787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbfbc50fbc2d875f2c630067122368dcadbb8f67778c3344b83afeaa1fd1b11. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:38:59Z), 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/DEQ022105790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da9e12b30bef7e436fd9269e7a3d05ddf2300f9a8337f8a7420cb8e40fc6af7. 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/DEQ022281261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39e939b1d129ffa0807d3152cff9a86e077cfbf14bfd2080ed95316861df3a5. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DEQ022281271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5f7a952940db0fa82a8f0949ad4ea48fc0d4372800b615ed2d61174f0f3c27. 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/DEG129902304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fe507818774a6831cd32f916cd72010dd08ea7e379158f33c258384c7cdb95. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEC680000686.