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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee9f981ec3f9500412a7160d44145328e6475293e4d188dc6483bb2fc160d36. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c85beef-3123-4b19-9e04-8476eb90faa4.json and https://artists.proofprofile.net/proofs/artist/5c85beef-3123-4b19-9e04-8476eb90faa4.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2ba6eb832923c1405029dce199c207f044335773b9733c9ce3c13754ffba2b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZFZ72560110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0b583ecb8a68548b04b2dd19348ab935cc94fff0e16e155b955c9f61d7bf4b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZFZ72560111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec268850a546828ea275fcc3ab85ed9b151aaaa4673ca88e2f5839fb09b6d9b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA52557924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1606076e222f74cad4c7e2019fa4e122c602841a9a5d78fe6e6deb336c1a4529. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZDA52557925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665765e55e4d4a89a4fe181376e48cfe65c953747ed35753778ba3da3695ad75. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/QZDA52510985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c5a28c8c97a34e7bd03208cb9cd2163c4f3fc9ce28948d6996f466fff98368. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZDA52510986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f1746e8b5e299107ac83d8f84f079c4f0839491e8f3c22673a281395fab9e2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZDA52557927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5af8766965336614b575f071a3b72095f27e8e65e235cb94cdedf80cbc5de1. 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/QZDA52557928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8131e772aaf0ba2f9ed98a919ed98ca11ad9fb0b5411ddde9654451e3b653b6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA62581287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291944cf01510c31b127944767bc0484f741d30e885dd9d22ece212ab0a1e324. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZDA62583455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435b726ea8ea74bc68fcfb8ddf472342aa141eedf97a63fc599f73b4dcba55ad. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZDA72572951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bc960e9e15806a78c65eb7449e9f44f2ebf035601605a28f07e099a88126b6. 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/QZDA72572969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719e6178af28d2a8eb8025d0148a09d27fb29a93b77b1923c055063e3a307db1. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZDA72576222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386498e51cc9c1ca1881389c1f579efb0e5f117ca6586f3374acbf81fbd0bcef. 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/QZDA72576230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcf52043ded7aec71905a74c7bdc6e75d9ecdfe8d982825146845dea9e11b2f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZMER2504322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0ea333f9ec7a0169ee944a920f4b57278c59306facc38c77316fdc1cfe6ce6. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QZMER2506801.
Sacred River Chant (Forest Ambience Version)