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 0x901464ff7d1ef86d70742b3ad095ebefb746d6d63b74bde5cb6a6df09b3d7934. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5e00430-5d40-4da4-9e28-ccf24191c71b.json and https://artists.proofprofile.net/proofs/artist/d5e00430-5d40-4da4-9e28-ccf24191c71b.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 0x7ad5bad22df66ee6f3c5c64287ad3c6684a8354024f7dcbc7dc57e2f345e284a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UST8K1414273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80033fbfb2a62c6026a42cd663ccdd6ebbe495e45dd23739c9ae1dbfdd5f596. 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/UST8K1414279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf799c73cec66a5d3d20a195cbedf14c9d1d91b1f68ee20ec61a7cb9f317233d0. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/UST8K1418274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9282b755db7026a057a55888af8dd2d6d778aede3567bca1e3a6ec4be04cbb. 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/UST8K1418275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bab829789d88ef1aa075312a7e3267a2ec281d67467152ca72b4c44e22cf862. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/UST8K1418276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18665e190d3095e83a11024d54041b7fb553c4804490118f23b3ca74c52314fa. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:23:28Z), 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/UST8K1418277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a6611eb9258bbaded4c1389210b96ecba767bebb6df381d9ee23520530bc06. 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/UST8K1418279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f3cc7366d6c43e505bcd377dbacbd672090ce875c0aac05ed8973db54f53fb. 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/UST8K1418280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bd6c712f8a1d248539741138dd11ffc2d8758e418f16b5cb6968752da8e6e9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:07:41Z), 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/UST8K1418281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672da575c57cca4a9c16bb1f638d68fbab8da0200873d898659fd344a94d35fd. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/UST8K1418283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e9351602f989448339babc7ae01502312f79abef07ad0b2437508b835d99d7. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/UST8K1552190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26102b0ec077f700afada80633b8fc7ff0384c478870ffcea6143d2df662bd5. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QM4DW1605906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cb8cd739d57e2d64624ba968f13af29ba581edec3666be9c2379ce17b7d0c6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM4DW1605912.
Floating on an Ocean Current (Ocean Drum)