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 0x3a3845572e7fb975155714802f62d95c05ab8fb0d8ddeb86f9e5ab6a57d08477. 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/0739e7d0-a371-4f2c-91f9-8913de1f3183.json and https://artists.proofprofile.net/proofs/artist/0739e7d0-a371-4f2c-91f9-8913de1f3183.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 0x977b59cfa9ef75f39585ae0899f0f02a3a11867f8500e1a3d525c9026e5c31f9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USHM22114887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9488069b430161265347571f4d425ebf53d9c249d11eb7c1d806887f224ca6. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:51Z), 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/USHM22114888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83adcf921e68eef7e30a7a7bb810fb6f4b1d8d2623a397821e5557971ce4dee5. 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/USHM22114889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ec0c3d282ddec31691240d21a65ca945519db01c20b7fb14a03250daea2b59. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USHM22114890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638e016fbb8c017c29f368531f9aeee60a14c3077e020e58c97b8874aa1584d9. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:51:45Z), 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/USHM22114891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe373bd9a45d486025b85ac9d46c2976ba07aa64aac02916e4e9333abcc26c4af. 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/USHM22114892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47370fe461afd36da93abf847d46f42f96991da149612bd0acdc526e28828f9c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:12:45Z), 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/USHM22114893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b63041d82d3aaed0c7e97a6328998e5e59ed46d4064e6ee81edf3e3772849e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM22114894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8510ce35eb992fcf31d05f36e2b5319828119c6bc62aeb710a8f318522e68d40. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM22114895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0d9aed30fd0669331232f7ae9d7a941c2179105a8e8a09b6a6a4a4306563a2. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:41:16Z), 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/USHM22114896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2102cccc579df650fe4928ba14e6c5e7eab4b590f698d01cac4b52d06ae1bc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:29Z), 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/USHM22114897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203c9baecb5de6645d093edd3fdd33d0aeacc72a5656152dc4d675d1ad1563ce. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:03:00Z), 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/USHM22114898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bfbb62b6f2172efbb7875893574a179d563b28572ffd1abc094a8d395e21c7. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USHM22114899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf2dff7e69830592568f349dc01acf79adb8d6e18406d501b5d4fb61544c747. 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/USHM22107170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b59746aaf2194619e1389af574f79f021a654e340e18ffd650b70a1be295785. 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/USHM22107171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14385376313fcb301eb602c4d7baab7ccc4fef34e7bec6aea33d5a52b33346c0. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:43:28Z), 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/USHM22107172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cf0bc6ed3cefabaa14b36c4bccc3340dac8f8c8f89acc697edb201704074b6. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USHM22107173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cc710975525be32d3b212fe663c784efe61c420ea71ec0718a34f314131df2. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USHM22107174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8896736b7494ec2e9116d3b4d8b1dc2ebb0e6c1fe584b097f05569baab5b87e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:28:30Z), 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/USHM22107175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a5d428c294f67d9cc4d2fe7ec9cf7a0fd88c24949c26a47ebf40c0a274a62f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USHM22107176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7139368e5ab41c89f87bcda96b84fa83fb9c0611b6ed76ca85c3a54d812ba6b. 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/USHM22107177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ce1a41fe3b776bc486ac005108a61fdd2c0f73888a4c2cdd4bb00e03b605cb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:42Z), 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/USHM22107178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4c8d1d42fef94fa16bf362cf3d8536173ef69f6267e580547f10f372be409e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:08:52Z), 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/USHM22107179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f002bebb83e7a5989ba698215830b37f9225eeac73ba31cdd83cbd97541ad5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:41:21Z), 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/USHM22107180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137480401a8cf356602ae6657d126b9bf3bc10093778112982bde3e543b12b4b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:54:43Z), 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/USHM22107181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821e7ec38b06c3887f79a9a8b027ca73960a0abc207a4f2e53ed5db3bd71125f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USCGH2240356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62cb189f0e07a034daa107041e791c8b6c69c53f4dcc5ad944e631f1ffe38b4. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USCGH2240357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed668455f430e062a52ac2c09d31633a986bf650a948dcfe3de11a6e24841725. 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/USCGH2240358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd307ae3f322d1bd4ad91f074a4dcfedafaef941b8aaf0b43890b9557079ff1bc. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USCGH2240359.