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 0x63f14ddcff64236e9f1c1de39cc5124517daefa22b2bc65882257cbacd878422. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/077fc009-6689-47b1-9846-dde58643ad13.json and https://artists.proofprofile.net/proofs/artist/077fc009-6689-47b1-9846-dde58643ad13.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 0x6c8cfddcbcc777d49daedeec09ad2c077bd0b73c60ad3fb07483641ea1f4babc. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/SKB001611102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa340191b4510a42feb8d7cd6835ae9d7fe6e95d4fb23a433f4a088acf95d97f4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:24:53Z), 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/SKB001611103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594400b4cdd67b06d5799f1b82c56bf120e673be9ecd83ec9db43e6d8aa6b519. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/SKB001611104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4a44b56405daaf528bfc58b5ad0109872e140daf6fb3f185adb998f387f0af. 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/SKB001611106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9a084948e70fd821eae81dd19edc94fe4bbce7b94db92ac004d760fcff1162. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SKB001611107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3500cbadd3cbaf704b58aea7cb61275dbad1f17af50983a942743ffb82819d. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:46:56Z), 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/SKB001611108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaa958483f71d34a29fa1b02645eb2541fb6822de804dc50573168fa4d2d15c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:17Z), 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/SKB001611109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43607fcac54b1f67e0908d0e4b9b7c7420d02af777e6dfe87fcf0ac69069f534. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SKB001802101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef3e27dd91e8b2cc2e219b1a2697dc83545c9a02dd0a97e6c40a5806bdc3b16. 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/SKB001802102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563991cc30bf6dc8db582bd7c51aeea84b7d6cc84e24cdde282e0339e9f3444c. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:37:27Z), 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/SKB001802103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d23d8f37a0498c5fbeaa37a528412845fde22c8198eb6ffe542ba4fd0167ab. 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/SKB001802105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42be377d7f4df8988b9b7353a33715ff8be1a169d6be4dd1bf28489cbec4dec. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:00Z), 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/SKB001802106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef48031bc90fabb0433c0b5762e3be26616e538e1401dcac14e20058b41a656. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:55:23Z), 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/SKB001802107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e82d99061e4fc7409ab76747bee14f719833a008de3ac609f1ebef6be498100. 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/SKB001802109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd13c15e9d1070522a1001fd68dea2caead98eb2ad9caa02be152de74cda959. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:45Z), 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/SKB001802115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bdce65be80fc66e827c2433d74adabe42e8ddd8e541ac888f5defb2cce6f5b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/SKB002012101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9324b33d15498dd83ec22fbc7380ba3d40323c7c0b0afe19f4a45c5292ddb0df. 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/SKB002012103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ec31960bd3c636211fe590b399004d72d62a262335b96427bb58a938acdc73. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/SKB002012104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d46144cfed1ecbf7da3517f20647f6c0c6e7f52cf08458beb42882a43905f8. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/SKB002012105.