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 0x225294205cd0c6c646cad6cd00335791fa03d854dda442c10ba00bb147accc70. 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/62fb96b0-a319-4220-bd10-03537aded874.json and https://artists.proofprofile.net/proofs/artist/62fb96b0-a319-4220-bd10-03537aded874.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 0x85b4b0d99e230237132cad51470a5191950c52c5498202f11dd46bcec6f76d54. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZDA42372064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bdd3614030f2d1a2514bfa01ea5508da8018a8aecef311777dc83b2f111ea1. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:46:59Z), 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/QZK6H2374305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571f8769bca19b713078a4b190e4ff0b61ce38b45f9a3c2fbb8cd8c7097b0258. 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/QZMER2303162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603823e495c81573b06a2747952a3151df7503e1444d7c18a250bbb68284929c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZNWQ2391657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c597b539e860b5e7fbe129041080f260a44f9f1baad8d7358b65e0b1f2bf39. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:43:54Z), 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/QZNWQ2391658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b44ddbc6ab756f7a0c4abb55aaf27fd6bbea5263337e2fdf4adf4c72b37d154. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZNWQ2391659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e4af22686cf4bf1970d783e53099c86bec9728faa6c9003873dbb1a1627d67. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWQ2391661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0f148113ef12df721f63540c6481ae62b1da2a712c6663a70e942d60461973. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWQ2391662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a565eaab02ee934536051dd18f28d78b3b5af9afc9c2dcbfce03c1259462b1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWQ2391665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26393e5a9fcccc67be06aacb5a12ea9cccfd6e555dfa01170e0b3b22e6041a33. 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/QZNWQ2391666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d713bee2c002ed31eec1bc60acddfc56f419f72ae8e7dccecdf2793d25c1394. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWQ2391667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8eb05870b96e448fa33724fa5d0b7bd33134de3a3f61c62642335bc6cdea2b9. 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/QZHN32408246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63094ee9deeedd3bec1b27b45042c90b2bff81b266318b8a14af7a3df781f42d. 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/QZZ7Q2463156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d3907634e7a288d01b6d7b8a52ab15456c54190c8739faa354d7e858eb3319. 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/QZFZ62543748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2df900f2d21d6d687e708bf24c256a93d6f1a3eba17d5508408bda4bf763f43. 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/QZFZ62543749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f7cd6dbdbab28c3c295b9f7d96986704b3270edf140f86776c40f37b3c4509. 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/QZFZ62543750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dab2dfc3ad294bac90e4b911a5f699899db68144c057982f8c4fb48401e111. 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/QZFZ62543751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1769212329735103c2a4d1337163bceb32915fb5432e2c7114dd17eca0e844fb. 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/QZFZ62543752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f59d9868fdcfaeeac630d4d685663eab1a0c025b8559ead6e1f14f7efee5a5. 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/QZFZ62543753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaefdf6dbfcab0c9a52a24f2dc410aebaebde50cdd55fd259a12357f46ebdaaa. 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/QZFZ62543754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789feca04617ef2426372a328a76c53af933e2683328d820d6c4aa9eb671b533. 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/QZFZ62543755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef0eaad4ff5283713091dfd98e4ade9a746d0581df311343104878d29f1c02a. 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/QZFZ62543756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af6ed73aa25cc06ff1fca0f52b333d61b0ea125b37246b82f0148e56978151f. 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/QZFZ62543757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80883368f9550e012bc0a2df00ff94e75bbd64d83e73d7799d8fb02bc3bc27ed. 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/QZFZ62543758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3539addcee82a92989ebacda1411b4694335aa57200bfc6921d345ce12b45f9f. 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/QZFZ62543759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f721eaa2258b49ba3a371de68f2d62a84ae8d241f3d120fb4484eaaa35b3424. 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/QZFZ62543760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf588a2f22e1c581726dc0e170b5e8212ec1d62d008c361d2f993603bd8bf894f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ62543761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e2399163f1ab58146f70a63e8d877ee6672d2835e2092b9bff5c2b88335a4b. 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/QZWFE2439628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e920b905510ce51f38862d3b790eace6348f47ed842ff15391e641c3095d5f2. 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/QZNWX2309783.