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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee66ac96a92bd9e1ef2fb127208cdf453eabbf6b8a9b174561a2ea1e14a6882. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48b4b110-58d1-4a1d-bc6c-aa14a666e5be.json and https://artists.proofprofile.net/proofs/artist/48b4b110-58d1-4a1d-bc6c-aa14a666e5be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
False Color Image / Dictionary Of Dreams
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a53e0bf1db4683079f57470f1075e75b809a8d8fbebe3567916c789b7e5c18a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEAR42032243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2b495bef6b888cc7d83fbbb109f57bddc9b087da84d04d61fb58964ed0bbfc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEAR42032583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab697564754a3ebeb0c07e85e109b766315fa2135cbc50dde587b1315f173181. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRIDO2113381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9e113538f0cc84e290615c726be65e4b8efe04df90860b7ec6ebb9008ae9f8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRIDO1911304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e22a741b65b779a0ae815182cb976e28576db8707efecf59c505956680f2cb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBSJN1300635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677a479507a5df2f228dd99a69a04799754826dad050f594448fc8961dcf8632. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKU932290001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578670da0340b65a7d2a5dbc089c0a29a45340e1c83c818c4bcf4d28e38a5468. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/UKU932290002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0b5866764dfefbd0bdd1128e62614e2277e6d2e4ac7045ac4a8eb63e90575f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKU932290003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e826946658606d542e09585d710f47da22445c29b052e90898fc119f634fbe8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKU932290007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134a5ed7eb099678a5a84a6d2899fc50147b63e406422990c8ef3d6a2c6f5782. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKU932290011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e34b2b5e8eab075ee10dc076b6be4306f329ada1aede9341266aaf3962d90c1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA5KR1922183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9abb1821966cd825eecc7241112a332f5abb03553cdf820145e23fa0200ba75. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USQY51723787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b9f91e362ebbb2bf8d161e96092fd3f8619448d3f66e7c25e88c1bf6f9633f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBVPL1600076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceafda82274c217185ab5b25dec449638046a840bb901e025a1a97cf8be1e72a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLSB1700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e793701f70ea4e90891c4601975cd452652bff98e02a6e1b1a0fab818a38c3. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:06:06Z), 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/UKACT1611645.