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 0xbd05d4a49a76dc052f2dc2687ec14b48078aeec865b63065f43cb7dedfa74547. 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/f5558160-eb5c-4fd8-8c8b-974970d454cf.json and https://artists.proofprofile.net/proofs/artist/f5558160-eb5c-4fd8-8c8b-974970d454cf.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 0xbb37b9864530a77d09535c841646bf5c64cde0108e950f0cfd224fd06c3fad1d. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:51:26Z), 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/QZYXP2324396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16352b666f4c40edb343204d0cf9172233854dbbac75b2930dc7f672fcb7a5c. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/ESA012360026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727c98cc98d68c803a6719466c98ba5aa7932bfa0a9b723c3dce286f2c200fcb. 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/ESA012360024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36252a432cf0363cabde371bb9f34c4b01d1b4cad68e2c6deff90191ea26825a. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/ESA012371644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099eb284aae1baba76dd509827a865f89a65c2317a14d0bb7c16afe43a72b50d. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/ESA012371646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3741ecceb00343ca71db85b54f5d5d1bb930abeba09e5bc1a8234edf15061493. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/ESA012371649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a59b7643155ece442e46d227641a166a716b3a8395ff8141c3499a40a7c96c. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/ESA012371645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e50f428bd1d68f9f4d21ee59bfe674183f8b3c0628ed3d9f8933f8453d19247. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/ESA012390555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d28be276ad8ca524a5a0f93c4250489bac2c37dc82befc984ac798c4ed2a82. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/ESA012390630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52179a167bc58cc183a38d83e70ab596264a019fe89e36b59d150e19afaa855c. 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/ESA012390559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf791ec199ebd5f497e2b1fb20aa867b37fb66e638a36fb30bb3a0517a225bf20. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/ESA012390570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86c6f55bfaa5006f9a983e85a9dcc6da696f2f22090e776c8fc539b235fa57c. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/ESA012390557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09501031dc677e6b082d59da8832dca3ad051dcfbf0b9c09a8ea7df0f5e29cfb. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZZ972335363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb575319bd46b725cba06e9602b5194f060d28f2d18e4e57a76b9aa5290bb2bed. 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/QZZ972335360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97f5c7e49d86d4a3cb89f555ee500e3e5a9fa456a7f7733c2fa056736611381. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZZ972343314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0a5b477cb7cac321b480a678e8e31e38e4d9605a94c816d2664adbabaeeab0. 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/QZZ972343305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245bb476223501c6dad60e5e02064a89f933fd70718d491217a7e9f42ba7e4af. 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/QZZ972343307.