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 0x2f184734f8dcf03f4f8a7891e33d4b9fec5bf93c1e00933b6c57184c51208b15. 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/53a985cb-761c-4806-a3c6-d81161772676.json and https://artists.proofprofile.net/proofs/artist/53a985cb-761c-4806-a3c6-d81161772676.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
OBO OBO X ENA ENA ENA (feat. FDJ DERA BILLA)
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 0xfd20d8ab739c1025ea8254f8373be4d6f1bd2c4b65ec5e6e2a0ed1723f3531da. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWBE2378180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc49be5b93b1ccf1c3113995001b01333d61029d0703ba0519d9913d51dd91f. 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/QZWBE2386277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475fb42dac19b32062a33acbff8b0ae4b0be2ed3acebc155ffd42aca666c4487. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZWBE2388951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dcabd54b71fc1763c8301bd4fd844998afc5b62f765e99cb526bdd269a11ca. 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/QZWBE2399271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df13a88959577c3b014925257b1d8ebbf6e6ba26076cca5b408ffe54082429d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZWBE2411646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c30a1803bb741d940d3e2d771d725402e48a8bd56e17ed9751a4a7de8c5c74b. 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/QZYHM2308297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0879d7098f280ec5110efd1568325b04a1312638c28ca44dd043c239688c60f5. 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/QZYHM2312502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b209965adf0cc800889ce86462dc1756a2c430cdf149e920ecd0a759df81477. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZYFZ2336078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5455e8d9a98161c2ac620d61df52806c28d63016900780454995e441e70c18ec. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZYHM2331744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a1dd69a17fe3ef00411558e3bdaea51a161589e087c4b65b2ef69efa432676. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZYFZ2346421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7b9a8f84fb55c2df7da92678b2ca4db5d9ceb938c842c10aaf0cbc5e66c975. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZYFZ2346405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bf2693b73f8d82cfe336d227a41b346258d3fc22b7ac2460376080d2c38e3e. 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/QZYHM2334535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905b07edeca7a0979b4aeb76ab363a38eda0f732a9656d2bebf8c6cf5b768b17. 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/QZYHM2338600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeaa6ec9a901228d6950a863748351e02b514e462eb8b488bdd132a2d654fd1. 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/QZYHM2338602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc9c4e273a8f9c792e2467a6771bdc3a39698e3758b264a60919105ec1a4eaf. 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/QZYHM2352677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf962478b4d757af847ac9a0534cfcf1a2df6b32b56048b2e955832e6921ebb25. 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/QZYHM2367746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566b6c6e2d83c19310fbf501bba553e48d706aa5ad6b746f54b448e5cef3a5f2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZYHM2405997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe76d0fb96a3300cbfab18609344435c6ce216365d9d7fb36c252f1e7145107e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMDA62521189.