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 0x7406f121de571d4a718444432cfe4f0b44a8b54f2e614f63a3288e86e3351cd5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc7dc3e8-3d85-431d-8519-405c454ef073.json and https://artists.proofprofile.net/proofs/artist/bc7dc3e8-3d85-431d-8519-405c454ef073.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 0x9fc5030729ba0c92f3ffd6d3345c62612570ed9e1f506139bc4c804d186a3217. 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/GBVTB1823001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47bf4280104804ec14df9fb23ae56a8afa1c8e76c09b20ac35c035b7c17dd6c. 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/GBVTB1823002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19185f863f0f7361298b38d8e3c1f5f94582630a9f01e8fd30f85b158a55639. 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/GBVTB1823003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78846c21f6a3fbddc68c76054e9fdfee96328c06c53b42debd7a204c8afd830. 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/GBVTB1823004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42444f4f33bc1b1b470778d116b12f31b32f564f6fc5bc3e182f9c2397d22c09. 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/GBVTB1823005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87971641e7f89adea5490740f67abe14a19ee537d5015dfc991a9d980d87444f. 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/GBVTB1823006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c8a7f82e6acbb5dda0c87a59d1f4deff3913848f07d6eeee78f7e6d6c4baf7. 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/GBVTB1823007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd7f7e0e9eea2a22ee1a31aa4cfe4d1f78e9f49d94f05cc8af5da0e44da4ef6. 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/GBVTB1823008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3e85499720f7023b202601f5e539e37360ef0af713a2dbf936594f5ceb7911. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBVTB1823009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38267ca04feb21f7961174599ef0958bd5f729ff5e50d6979f98489049ccf61e. 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/GBVTB1716002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88de3b771ae8e0238484da8ab01e0c56f364f237f7dd6606db5a59a45587acef. 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/GBVTB1716003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3324962dd1130de2b8edcd20e005c09bb915a478c3fb3015fa150eb2700f565d. 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/GBVTB1716004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef290c0538794df04730dadc063a609ecf9937e1ba9755ed1fc7508bbb9d9a3. 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/GBVTB1716005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4c1e3c892e2d315a1516515e4df78e8f98e251ce83a34fc2a0a0185e607bbb. 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/GBVTB1716006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6292ce8a074720db4639a5a3d9f37e5dea7d9fc223ecdb07b2e2e62d608032b3. 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/GBVTB1716007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300121f59f4b40acf7b23431bfa56a03b4998d15f05de135c87b1a244bad18a6. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBVTB1719001.
Klassik Lounge Nightflight, Vol. 8 (Compiled by DJ Nartak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fae8c47282931657f9fd4fb57d1495408821c1b4caf89115a6d52a946762ab. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBCSF1500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9d1945300489be88437fd915fc420fb61822ffa5fbfc22817c7e8f056e7504. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DERK91524607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef52d4580f0cb2a1194ae179859e8672d3e8307fd90429a58b3ab5a956aab01f. 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/GBMCZ0600834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2824a51c8c8150589e8588c9ef99568a431e20ce76fde963d41a66d612b0fef. 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/DEOE81510296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01824726173a424c4e1d6ca41f54fadf6b8a3fc276f43c573fdbdc89c9517a3. 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/DEBG61603289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4003430cdeb5588bf1bea0c41dc350e62fb4671a1dcd17b02e728f62050a355f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCACF1526777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a8510eff6711a8460752bbc99cea388199ef082543049833f54d364c618c37. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEBG61603290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e17c4c3ccd8f4907f687937fb72f48e3cadbe305454e8908d59f5fe4528af59. 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/DEBG61603291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f8a61415780e0e8078c97ae99311782439bc1fbe07a63688d9aa155a30a8d. 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/UK8DG1400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d3a361c4de47201e173870af39a6b82a745b43e418c971520f05dceee64693. 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/UK2591300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980ab52d2ae528d75529a316780605578a5f3ac833c630cf21e6d276d4d958a7. 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/DEAS81500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011d45710de2d1b3d29beab754a0c05e20898fd1a55891dc2b0e0f22797d2d5e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEBG61603293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34d7e8a3cdaf2a030f008f076d459a52767bfadd5a100d82d2195d6159579ed. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DEBG61603294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0537cbc65c0917907d751b404ef5b3570159e1b91d7d6c225de4e8686f3aae26. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEBG61603295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3004c59e1aaf84a6b945c66515c73d4a497d63d9af5d9cae12c381a5d5be81. 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/GBVTB1716001.