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 0x60aa19e064d480e4fc3c95d29e08c8d2a49d259d3e7a27cd7b32841a1d830251. 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/e034004a-8194-4065-b0ed-6f9ac7bcf718.json and https://artists.proofprofile.net/proofs/artist/e034004a-8194-4065-b0ed-6f9ac7bcf718.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 0x1f3a9df55b254efcf29d6a25397e141fd267a0f99e541dfca368d05ab102f6fa. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEYOK1638421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aa8b3bb5bef46e92999fb57d66e366543c3c365e8949f8808ddc3d30e81cbb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:11:44Z), 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/SEYOK1638430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392613aa73315485bdc563fa35a55a6b2e961bf1a25a8039caf4f7542c3bfc8a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK1638423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5e1f235d66a255a9fcad5a5c3a14d952d5eefd638381ed342d772abbc4c4ec. 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/SEYOK1715130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d0b034307a17452a2fe920c8a842fa59447ac4aaed8d383d2a1f6b497fbef5. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:29:24Z), 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/SEYOK1715132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9a8cab0adc25a18824b8a14ad1cadd56f5d35b01f9e3a11618d23b6c097917. 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/SEYOK1715127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d29e7d7f6450780314372c411492f7a823a6bb5476cfcff2dafda69efbdb8d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/SEYOK1715131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7134738b3dc8e83a28407e56fd6980619ae5c2b95b697eb53cb2805acd367e. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:27:37Z), 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/SEYOK1715133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05779e1e6b92dd8b61322df679944128b5d6035ba61cec1002b9f23eccd4a1f3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEYOK1953378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e0bd4241d8330626bfeb69fc85ab412080306bba5e345719134b9e5bff735b. 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/SEYOK1953380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146851788afe2f89a3466e7d5b9524227da4704979e57d4d64e20330e02d47a3. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZNWR2037034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3875da8a80893fc035f781d91c03d9d8f8d4958e2d2c12a6989c01b61d5b57f. 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/QZES72277122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddea9db2e995481edfd2ca1393c7b11e79f4add1b6fc9e3ce9e331418e1bb3c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:43:46Z), 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/QZNWR2162245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9a2018cc285c874a00418c5a3ab0ee6f7229484ed73d82842270ce39a0a028. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZES72277128.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf029923e506d5e2f22e055f5e42703d5e614992b04f9d2e1a103eb58c025f002. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES71G2426589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754e16abe17602bfc9b4aad801470cb476cbb07ae229a22b7b62d7d7390a510b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:55:36Z), 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/ES71G2426587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd2de9255cd603b3a8c709a81e5483cdff675b06d5a50089cf5515afc6c4ba9. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ES71G2426586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a8f6a620e7191ef4d2e0d03cf2dbc2331e45d4d791e31913b9b32ddb07a3cf. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/ES71G2404041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a07c2980b12f75a75e7838211f2160afbda6eeb541a86714e8bb13aeace924. 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/ES71G2426591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba10e3ca70b538903298cb20c98134d89f1be83a9a373db5a247c2911660b2e. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/ES71G2426588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9e158f036f121100d2279d67716f13ee184051d988e8624c19600b8c4b26bf. 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/ES71G2426590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33f98847d7cbf8b0996c643f313ec8ed0f4e9d8b573a33ebf790371562b6187. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:30:09Z), 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/ES71G2332341.