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 0x7814fec5675d9c60c6b14f0cdf3294776221a14d50adb7eb7af0d4f6eac9315a. 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/13d8a658-f845-4212-b2e7-ca74890cd3b5.json and https://artists.proofprofile.net/proofs/artist/13d8a658-f845-4212-b2e7-ca74890cd3b5.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 0x061d69548368913c253556153a7fd559692ea6789c8ef0d613f068bcd6a4e315. 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/NLQ8D2300475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fac8b65f40683127dfbae7c3932008d292b33808304462b9b630575bcfa107. 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/NLQ8D2300485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc8f24e1e512dbb75ba59af5266fa5f9969e1117aac4fe2aeeaafd1c9ea27ae. 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/US39N2308720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a28275119bae363615c4951951e056613f88765070614486f2ab6bf781ecc4e. 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/NLQ8D2300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa151588366b51c784716e1fe8c76d51e0b20ba0142d02a57f3b1f2b17004487a. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/ATEK02277610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe133ec0bd492b9cd97d8f25028ec6474b0a502fb2cb1ce3e04cdde512adee330. 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/NLD682200750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec54dc8bd12db1c8f877c06d2d79441fae63b95a39bc067b25d0cc8658100ef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ATEK02277164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4f2aa2c7d00236b36e2af0e6ed1e3e6bdb40466b4983389539ef6bb029b852. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ATEK02177306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218c043804c37554dc9b4519ad3e6a8f0a9bdeb8c8dc7fcfcebb60d10c80fdca. 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/ATEK02177270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3670284a90c9a830306a6ce0fad27a80b5ab942b1a472f55799187260a50dcd1. 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/ATEK02177232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1884e0dff10027574e2d4631dcae46225204cdf5e75763f6e32a76976118d04f. 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/ATEK02177131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceb556eb2b391161f6e520506661f0bf644bd56e2232d574b45cb926f152e76. 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/ATEK02177125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4c860cbd87d5eb88ae70bea752208dce90514808c7c1049341d82e4d14f512. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX2YU2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf46611b4118fc1932d141e8102c1085455b523bccf40714e4f85e6f795dd059. 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/ATEK02177041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d78d7b0ca39a278b1aad156b939a31aa7df443854e1d4bc854fb4aefd77dd8. 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/ATEK02077075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbffb8df559673a71487adfbacc078811844e3fc50590eed49cbc2a62f9804c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAKHO1900656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a2f3923c7973e41f9d3e3fc78eafa3b4e725d69f9329ab63eeb7aa703733c2. 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/NL1DT2400298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0de757b3536058278627fbdbd2f45854a8706bbb1a1e415c154aa794328e92. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NLD682400223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabec690ca0fd5982fcd6d646785bfcd6b90d2c8dab8779200b1760c037588839. 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/NLD682400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f7f9cf2d1dc9996d34f67c7e043a00dd75b16fce0e55aa2173ffb71a115e3e. 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/NLQ8D2400398.