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 0x38073640672c3a21c696ae221ed7ba99e7e580b6d578233b23e2921e19bc6822. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46de961f-4203-4adc-a47e-8f142c8f5340.json and https://artists.proofprofile.net/proofs/artist/46de961f-4203-4adc-a47e-8f142c8f5340.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 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 0x1fc261987c83189a688f99df31e7198ccd12f14aaf607a7f65e3de505daec148. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEN330000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49c5345a936e0e4ea066ae8323bfef4ae920084a758e0b2081500f1fb290975. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/DEN330000409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1d0b1dc4feefed850ede7cb35e6cab8bb630cacb193fcbdd578dd7b5eeb0b8. 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/DEP640000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a111969e2964bfce97276d24a780630c50be457b45cca24e468ef0539e0a84. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEP640000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6559a41d35d0d25f36f95277297153d0ef7d3aebe9216d7dc4e942e75e9db548. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEP640000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a4e2263130bbd1fbfa38f73a6a98dbd77ad10082a326b127416ec2829826de. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/DEP640000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb257617bb31b9e0b5f4d554c365d6369def095669ae672c03f2a516e9fd42f14. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEP640000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9471dac2fb06830dcd26d33748c0a622bc25c6c1079650d7659490852ebb7f. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/DEP640000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83a43339cfddb45416d894544e1f185afa614e070db564bb579f85cc99da689. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEP640000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68881d776cff4f42be400cb7e692a1e5a1308d6936467afe3b0c577753861592. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEP640000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa3d3d6ac0dde9023d8188a560df0ccbd91eeda78a0646a7b275e57087fb276. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEP640000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe42ca920096d3a455ba9aa587aa86f55cd1e880a5ca52e25b5e48e637a095f. 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/DEP640500152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe75e032949b424574a35d67ceddf101ae0def99aebe83e6db792928c2c7db14. 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/DEP640500153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979d08c6dba9b6a5806b7fa8521f7936442f847d4382e194dd81f6ab29bf9cbb. 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/DEP640500154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc46ebae1abe2d961b0a4b392a59476bac5f8df0bfb7a8ac7d54153d944818c. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DEP640500155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ae8077d560421b43571c86dd93ad699a5ae8fe0c326a7051e8ea960b1c1685. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEP640500156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5db40a4e19c828d06ddfd23364dc622a3454095c5aa1393dbea80d08ef5b825. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEP640500157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71c1e5cb6f31d0fba438a3e3b13ffdb1e0c11f8870fb3264f90aa15a6f3a796. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEP640500158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8becbd445b72636a59a7a6b9e1f516148e4036d63e1f5dc6e3069dccd8dd4cd8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEP640500159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e518c6d30fc47b88f23c0557f27b27664c0f765cc61a3097fd8002f5db7ac2. 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/DEP640800133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49924004fd3fc1f819e6b10b3c76366e8ac84bcaf3a6bdf76fdc34b936e86ef. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEP641300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8156a4d730ea55dc57221d7d6d5afd3cdb6435e9bd791fdcbc94ca2c54f111. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEP641300247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c06d04101682d11a7cdc911011755138fde4d2cb39627b3c89c97d273868045. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEP641300248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103701ca2ca3ecb70a540824fad961ba5980fa0c1cc591e0eea44c2a53673b28. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEP641300249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1553e98ab98cba0728d7559daceb41cc75feed1c145a4e100ae0205868f83ab6. 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/DEP641300250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06de5a5c3a00fba4240aee3b870e51dfe750e8f7a88e7abce8e25d280018fdc8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEP641300251.
Musical Traditions in Central Europe - Explorer Series, Vol. 4
Mechanics Of Waving (Automatic Music, Vol.1)
Plastikthai / Voyage (DJ Sotofett's Extended Mix) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d76ba7ff79b6bd30558fdef81426b2de917c1f5e556b95e586816d184751583. 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/DEG931891958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ac4bc4a2f87fa9d30270fc4a4027b1f1960bc44c2e3af7c6ab03eb0549f1e7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBCFB9803416.