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 0xbae2c94984e520621f3b61fc60072bd520f51303db63ea44760957a1edbaba17. 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/5239987c-8480-4b44-afb7-6da710c6b002.json and https://artists.proofprofile.net/proofs/artist/5239987c-8480-4b44-afb7-6da710c6b002.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 0xfc6bbfb0d1d4c2b0426f21286d58409fbc96a177633e115bceb21d51a3494bdc. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SE66N2207151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0432635457cdd71e6707db0ffa89f542258430025bb9fbdaeaae300f65ffe2c2. 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/QZZ7S2450211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e164368048cc2b180d5a8c82b252546fd6f223ab3a0385221596e26042c599f. 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/QT3EY2468311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc8691f47ad3b8b916c43aa72bbce125e7d2519b90d7ab162750892646e79b0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZES52571939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c78d49fb2a766332ee5c1d1975b97803ca203c53cc37f7eeeea2a8a2eaa6df. 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/QZHN32587133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690eadd1b8f0bb54394fff3946567a7fcbf6d6325e8a533d845ac069cec4230f. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:48:49Z), 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/QZK6J2502692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbeda0f0ab97beb459f715d996ea45e725059bfc4a7d4ed677c261c82e4463b. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:59:10Z), 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/QZK6G2549305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc7e6d9887e70e1b0efb09b445c96558244defe0b1fb2e5c7b5017e88f07631. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:19Z), 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/FR9W12522802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485ca0c53ce261b282e5a3f95518881ee850cc28f44bb975d968eb2aa9a09daa. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR9W12524211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30945e5eb4d3ed50fd558bb27a8833f1a8eb7eb75429a54466a131e8367cec39. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FR9W12524210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9353d4860e6f46dcd5f3fa62f5924c0a7409cfe74c2cdb726adb691fc04544a3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:45Z), 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/FR9W12527042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408baba2df256e0f6e327e365fa0d1b642faf4de2ba94afffb67fbc7f5222d85. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FR9W12528461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96f3ae527c93184bfb18ed04b0a69f51a66905b1ea1c084660bc3137bbe9344. 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/QZTB32590121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268bfe34929b0b8962897f32c478794bd4f197cff13e14049f62e51a091abbce. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZTB32590122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0834ac03d6e0ebd4fb6843e07cf96f543daa729593a64895e312771052f0bb1b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZTB32590123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58204797036ebb97408066dafa7deef36245b254b15d0ac0a8dc0b510d29757b. 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/QZTB32590124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fadf54e41bd4d14e7d1901a7d4365d5ab8673cce981d75d3b95d9ae2f06e2e. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T11:01:18Z), 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/QZTB32590125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5aeddac937c125d083c4614a24222e2cd663b3594d35946e3c02e2a2efcb3f2. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:32:01Z), 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/QZTB32590126.