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 0x9d9d8b6c156c1be0788b9ee96cf71be0b0133bce2cb61c4d22b0c1a5e95c2dee. 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/4e634ede-0122-4ae5-b6fa-44843be141be.json and https://artists.proofprofile.net/proofs/artist/4e634ede-0122-4ae5-b6fa-44843be141be.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 0x7f3baf6c3b2cc8e6e538132dc002882f968b640736e8e999a6860f0e381bac82. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:56:17Z), 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/ATT252208230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39303538cd764e30995a423a354361523a16041b22f938083b08caa2611ef2ee. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ATT252208240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1ea9bbce1dd16d2868f6c8821c2389803a3948aa01b398e0961f52ef1e9f7e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ATT252208250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f5af79f330dfcdbc50ef06657de77f804383bbd7ca7707c4a9bcc73d4a519a. 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/ATT252208270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1906cdb33188ed8491e0184e6905a1ab5ccbfb63b58c70779de314d97f864000. 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/ATT252208280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f148c053ec6331e3d0326869de4b565f3bd90fcf6148bffb834777a874ecd30. 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/ATT252208290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e133bee26367435684f80b5da5748de0fb537b504cdda7327e178b7f90c9b9. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ATT252208300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10a7a272f75c38af29e329a246dd365c106ecf4b62f3d05a7dabea5ec098fdf. 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/ATT252208310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1746a0610dc36989ec4f9853254c2940e59a4498bc2e856f73e6df3badaca2. 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/ATT252208320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f3b039045e3e38864a1a0cf3a11b020e8cff0698b6b95dbd4268f90abffcab. 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/ATT252208330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5893fd82fe26d811ba386a2db909b976aa5bcafd97f1220a63cb6d565e568ef8. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/ATT252411690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4289787695381131f86e570053323d7d3828953ecffae5ebd0372fa89b6ef226. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:08:53Z), 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/ATT252411700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f054e553bb50647673861615f5dbbf40255e787af95468dc960fea4ece9a75f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ATT252411720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a000d606cf79e9f7a75df5ffba8804ee004719cca0ab36cb5efdf5cd180ad6a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ATT252411740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199f7bca2749c9fbefd925bc4d598bc86a98c9dc6e8057a4efacb878476bdb89. 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/ATT252411750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181f0097b01a2a2d62ba50c363df16bb2ee5c05f86d63f4ea0d8e96d8e907630. 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/ATT252411760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2b8ba241f7e5857fb1ce31435ec1efb179b7f64dc66e1667775e447bcb14d6. 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/ATT252411770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3011c8be048da60934e978d3a2f13efdb8be4b4f5052bac61b6d33159255ac96. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:47:56Z), 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/ATT252411780.