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 0xd6dbca56915a0f2a4bb302034538cfafb0f9ba8bd7c012413766ccbab840368a. 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/cff6051b-b695-4be5-88b4-b41cc488d17f.json and https://artists.proofprofile.net/proofs/artist/cff6051b-b695-4be5-88b4-b41cc488d17f.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 0x0bc6a32e38a88b663a539c90b1485abed1532e7700d12e7ca8b2209edb1cdfc9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USBAE2206267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef882cd1823d705a04540cd4a5f0ba671c8e6d442f487fb9f8862aca74f2ed68. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USBAE2206269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5817bfebe47859d66f152d4b4b488b47f3e992ad21e05c2146f4d65652040b. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/USBAE2206270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f40c3d37b1f5ebde047985fb59d81a3344261fa018e3ef57ff5cb7806bec42. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USBAE2206271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08ff071490f09ba51d4e380ce83a0b55a1f639de82cf62b9cb7c1556478d9a0. 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/QZTAT2481069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa679a66730146180c651e7ad2f873f64591281d140803c0c61c3b62b5eb20ac4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USBAE2207141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6b9d1b264fec2b222f6799b4b918b10854e05f057ab4fbc2a047c2f6b6723e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USBAE2207142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8048bd373b10a75e24639dff647f3cd06828ed817def8e8b7c5ebc41f20d7e26. 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/USBAE2207144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cee705b301b52113b2f8a1ef9729126a7ad2898ebad648ba5ba087433076877. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USBAE2207145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ee9c2d946f185d1e1f1970618ab081aad6b48c0ff13c1bd2c6f2ecc06e563b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:04:47Z), 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/USBAE2207147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741f68f1bfecce963b5de8fd773655d3bbc164f2b4bff62b24d613184c9d4343. 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/USBAE2207281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7176709ed0165eacf6f5d496cd133f9d232d55b2326e92d7d73ff87c86812b74. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USBAE2207529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4c3aa1023dfa5ca12dcd034aed09435b8e8f262adf160e52f55123f6e0cf7f. 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/USBAE2207530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793cff127538a586807443cf1072cd20bf0a07bfe8a7649244f4305d37db8a81. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:02:47Z), 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/USBAE2207531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f64b2c83893415b199095526904a5003ee05a50c7dc74ea24bbfd6cdf482ef7. 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/USBAE2207532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fbb877592b0dd84cd74f290026d8c31bfd7c9812d8abd8f94b5fc5b84aebce. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/USBAE2207533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732adcd22117dddfd18f74cce512455eb592b32286701f6a5bda8a5815dd38bc. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USBAE2207534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02193977d5b95fd7490d75a7fef4e1afc5b058f7de7d82d9a04d12431d7a8e92. 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/USBAE2207535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb445cf2ddd9758bd782b606c5e3ec2d2c64bb03a28da5c84e660c8aca77130. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/USBAE2207536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca4eeba81bbcb53c533e14cb79c93375d9ff818062630e6f6e9bf26e84f91a0. 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/USBAE2207941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11af5580c98d7e8d9cd926f644f9e1bc9c419d53df3a2850fb9ba5587a5790df. 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/USBAE2207963.