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 0x0fbc8ca39e63512dad16c643638fefea60366aa95b2d08f41fad2dfcbcaaefa6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7046a0ab-3184-4d18-82d0-6a738f3d4075.json and https://artists.proofprofile.net/proofs/artist/7046a0ab-3184-4d18-82d0-6a738f3d4075.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 0x3dd5d6e2a9e5b16d0f1285c8babcd7d852987dec0baa6e4674ad845527ca74d1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBPVV1902792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d7e4075fb2b4caf2cea8713b016d24daa2027eaa5f538ad6cfd6f05c7cce8c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBUM72202938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd918cd965b9809410435a1041b301936ccb33a97388e0c13a6f3a13a20b4965c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBUM72202939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe6d99725402be1b7c8eabb2d2a9bb4f13a13efe4f496e80ea3f4b02ae12acc. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/GBUM72202936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0664364696b591169428c97dd3e9f9248a5c106298a4209ec9fe8e57ec924a7c. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GBUM72202937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd98789bdd8a61f4c3b4a960055892759896b677910fd157a1d7898964a6f072. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBUM72202940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f5d83f46fbd69d26a3b1caee023f928114f4fe1c2cdf890c8dd51e5476e105. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBUM72202941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5004f171ccb1de7146d3ef802cb0ce56d5348a18477b6073f6824c1c6ecd6fc. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GBUM72202942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea41ea9874cba0f8e1967e18f1454beaf0e947b6436ea18f44c947e384aae5e1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBUM72202943.
Last Days: Non Voglio Mai Vedere Il Sole Tramontare
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5504e2353e7bbca516691c19f1bbd1e6e9970749139249753539319a4bf44de. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA62245120.
The Sound Of Silence (Arr. Lawson, Trueman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07a95027ca9dbe444947f43a9425c4694959854c60ce7d9c48f92a4fa728976. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBUM71903506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203977510cf02a5db8bba64244d7647b05e303b1b9355f94945caec13ba0df6a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBUM71903437.
Street Spirit (Fade Out) (Arr. Metcalfe, Ryan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394593166289262f66d181976c038cc6144aa85c5a5b8dec18270e9384015147. 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/GBUM71903436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7778d9a1e40fb8a804eae42cc06af4fc2b9fe961534cd78077cd6ee3da44b782. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBUM71903441.
Famous Blue Raincoat (Arr. Metcalfe, Foster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7e2851592a182fecaf698b7f68ce8fbf46e540967af6fd75fc32d2bbeb0e64. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBUM71903434.
Nights in White Satin (Arr. Hale, Delago, Assad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56887074ddccd46c1578cb6d6305ee1ec1a065c2ba50e2753cc11b2975d9e153. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBUM71903438.