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 0x6954c061bbf426757bc8edca7f077e6beca14929a66ce01f3f1ebc47efb1b0df. 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/1dc6ae30-7ea5-4854-943d-1ce7b7511230.json and https://artists.proofprofile.net/proofs/artist/1dc6ae30-7ea5-4854-943d-1ce7b7511230.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 0xe03948b4a7cadae1059df7602afe5c6f5b468e717948f237e8ab53f48a3ff07a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBLPF0241103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e365fadc517a33d99cbb6e953653539b7f1f34848ffa156c572519a92b59aac. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBLPF0245611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580bfa6dbf0d74139cf7828b7ee61e95eb5e8aef1e020af3ded30643e3d68fac. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBLPF0245612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6944ed5f763ad1c5b4f1684894f94e415c94dbde9440f4ed3b04a2cf6c1a6ec. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBLPF0262766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e1d2abbd77bad09da99bb9135329de474eefeb8ee511641c2731cf5bf78bf6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBLPF0263402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3313e6ed80a27a8de564c019d5a2a15709b0f0660e35e14ce5e179edf319f19. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/TR1762000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7d9a7eea9d48111aa503f4b86d526ef0b14f2c9f538976916bba7ad4c13332. 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/TR1762000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7d9a7eea9d48111aa503f4b86d526ef0b14f2c9f538976916bba7ad4c13332. 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/TR1762000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841ec87f30d2e09a7915ab1b650a8b6a3e52a1357c8ad92a5cafabd6133410ff. 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/GBLPF0276152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbead732f0224b4f1c79c60c81e3fbec91e42bf2042ee9242fb793d530a8791. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:45Z), 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/GBLPF0279339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ac13114d72820fb8ef15e2af54118416436b4d5328393d2f2ba35d5a1934d1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBLPF0290291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28a9e8e34c9c54f72ba3294343d7c4fc270037a17590409383a97f73835380a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6P42171256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2785db3ec47dc6d8858650242532b7ae94f6f05c957b6729febb250d8a5ad3c2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMFME2187853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582dd725b0268a7f2f9023b3b56ec3ee70d99429cedd7d37cad1a47031fc867c. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QMDA62286232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5064c887d74e1a1069c664364c3d01fc0abdaed9d0467882d6311273c57bdc50. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TX2328159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d467a132d4bf59c8813348fbee6c7299c08893ff8656774edf4a0fda8a1bd9e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMDA62333115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e164acd2d61372069187b6ffc5c8f7e25015789c2c42b8417115d72c96a50c0. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TRCFE2413354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3db89c389b8a5dbed5b04cca22213e6c09e26ee154893faa2cb7fb5da5ff77d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TRCFE2413473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946659c745a8179cea4ce9ccf884135d3738db961902f0ac3b968109e76252b1. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TRCFE2503669.