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 0xa671b01996e4c3b7e554f77e3e67a2b4e17addf25412a4da2601fd751eea3ea1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c49829ea-4fa8-4916-9162-36806c52857f.json and https://artists.proofprofile.net/proofs/artist/c49829ea-4fa8-4916-9162-36806c52857f.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 0xfdaf4501a8e32207f12f63263db5d5a24f5ddd1d1fcb424c9c629167f3a18adc. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZK6J2387522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d899d787676ee3cb089ca8f0e7089eeda9988189b183e38aaa529e914c2912. 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/QZTBC2311315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9fa8bee52d024a4c23aa2c3ab0df8b166a8dd97c19f057ec745942f6cd88b1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZWFK2358292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7a1739c83f949f9e0f25c4005f75397249b569e54e0820edeba344f899d2bd. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZWFN2367372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca467b657528764c2e910b559ed674b3056d12892aeafdbce8c4503ba2d8e57. 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/SE5752405397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d71b366ecc6f3b44af5899b1404860036cd4180e69cda46c303bd8b52ba78c4. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/SE6HN2418845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c20f01814aaa069f1cec9c6ff24ec4a40f5d8c46777e858e62fcdba87490cf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SE6HN2411902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5118a79bb38779759ffd6c5aa3cbecb5659f4798199d157878cefbad4aa61b54. 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/SE6I32472804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8521f9aa26389452d903735e851f344d96c817cb95d43fe610405dea0dabda50. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/SE5BU2535310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fa8534f08ae3d43893d78e7a89764cbd2e84e9435d93f31c4f78bb7a8259a7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/SE5BU2533163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362b5e0bcbce7677dbd851d0077f865674ef1f6209dfb94afee002da2f063b89. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/SE5BU2533115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c34abb46d13b13186eafac2012edc9c4ae619d9860792d5631117d4bafb474. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/SE5BU2531701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff72e1dc08e5ef48f57a2d4b3a9f079eda7434057ed3a3f454e0e5991e5d583a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SE5BU2535311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cf1b190dc35ff4a5089427d006279486335aaebc9ee08a75cc79aaaecc77ab. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SE5BU2535313.
Basic Pleasure Model (Slvmber Remix) [B.P.M.]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e193fce63ed976bd150ffb560aafdc9d6372ec3b244b1a08b6585e1f253265. 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/SE6XY2562840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d0743089cc83faa791e1a42934d2daeae1fe941e8870b275d57ae26f52d2ef. 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/QZTAY2428173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178a637e722526d5b77b807db39a36fc81ff73e2eacb743ef6286e12d7b47f42. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZES82327281.