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 0xbe7200f204a439c585add6082f5f5f3e51c895750636000ba5dd8e66bf99b25b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da8457f9-68af-4b7d-9c04-1b4c758d9b9f.json and https://artists.proofprofile.net/proofs/artist/da8457f9-68af-4b7d-9c04-1b4c758d9b9f.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 0x9712601c953eb692f2a76684bebea7316ac46141b0b2ffaf03991287317c3141. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:30:48Z), 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/ES71G2152924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7005821506e58d63a322f94129c1cfb92525fb10196efc216120c29f3d8bb24. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:27:21Z), 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/ES71G2152927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f6645c945916f4253ade7476184c69400c56138d9a879e89b575edec3edce0. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ES71G2152932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945a55551f70317829cacaeba9ce68da00f57e4a9de05daa34911285e86cca27. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES71G2145863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2760d5af63c8e88938fa8b3a98cf1fe663d42628287c87a98cea562bca85651. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:30:48Z), 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/ES71G2145867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a38c1f79fc52d54a7388d7c6c0da9b67aa684dcae7d1cdc5ec50569a1c54245. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ES71G2145869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e2a6f11f6bea33d0504f45347086708670288aedb2fa806065ce10d8e46ebf. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:24:45Z), 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/ES71G2145871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ebd92371b791cbece37c25182351fffd0138aa13b17493d4689075f5e501b5. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/FRX451598891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe074e09bb6a877c99ec67ee03dcda5820f8a5447f044f61cfeed447442c31c01. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:58:54Z), 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/FRX451598898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab9280dcf5ce48e38aeaff094e1643622ae70edeca415562754f5ee3d1dabac. 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/FRX451598901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6550878a6047473b1b61d72c26bace4847ff9094b8dad3572a0a64c19c553c11. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/FRX451578547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6e7efe79b6920b39d0719e133183da3b914412a6a4f83db70ecbd892efccdd. 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/FRX451578553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6bf1918fcb8a428cb8d48556404948be702b5f116ac2a0579a5f99907fb163. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FRX451578554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e6d1878c9f998214317ac8118d8208f2701e89105c6e4ba39e7167177b7dba. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:52Z), 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/FRX451578558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7a63c270ff7eec5c79fa383b9649ecad821ae622d528ce5aa0243095ab6b14. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/FRX451578560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a20ab8a5d20c85b19e6604588f9cb70f46f2ab17a0bf799c90ad3fb443a918. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FRX451578561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11efaa2ef3d3b9cbb7a5115fa1a4db86c273bbb3552488db9f04afa61ec4de7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRX451578562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19f1489df9893f03db8ca936d2996d7a943a8487c1024b56d903896f0a939d0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX451578563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097c1f041308c8fcc3fdfa6d95dd92213ae391e36c39d6a972e4b8282aad191c. 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/FRX451578564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca96a55804ffe6386c766dd8020017237992e951054da914295f5d6fb1e5fc9. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FRX451578565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a88d585f8c51c12021429365779d1da8b6cb8180c448a05cf652a3932f9a36d. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZYFZ2477994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186228ed2e5694a1d16382416098c5ad6abebfc69f0dff7244dde3232ddd1b6e. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZYFZ2481650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7169dea09c6adf28b0ede1f6a1727cd8493f584942ad18726ef128461f4519. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZYFZ2484959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd105c30bfe41971403591d5422f3689cee0e80c0cb9be24faa9b5fd117a009. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZYFZ2484930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa934dc6a008a7a2b80844a59c22896e36e9e37e8e80d4b53c8344b00f69fb023. 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/QZWDW2517894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21527e6e8b8f75851d50609f1a6ee41f8ee9be6fd457a400b35956c0d5705f7a. 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/QZWDW2517901.