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 0x8cec9e38fa7790c375475e6b6dc39f8efd8ff55506925bf7972ae3b78e9764f2. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b71bdc4c-9fe1-40bc-bb3e-03a29f09950e.json and https://artists.proofprofile.net/proofs/artist/b71bdc4c-9fe1-40bc-bb3e-03a29f09950e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x61882c9e9d1409bee21f0d0572556eb4bdccc065737d9208946e4c4687277f11. 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/ITI022300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f52136960a84635e3f4fe2faf30f7e563d1df7ec1f8a5bcfb39175d97c2be0. 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/ITI022100346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d10fec45d0a0f5c52db908ec8e854b8192f33f68e36de892d3a6923db93c9c. 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/ITI022200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925926c47ba7830a26eca58fd2cbe838bec2b9014580be9aa235339605a4d0eb. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/ITI022300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab355dccf7d094e66ceb1113485a2f1ff703e4c2f9b24c0f36ab1e9824e4297c. 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/ITI022200330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1841e7ec797bbc02bb4ae43fc0138885a5612a2687891d4719203a2c706f795f. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ITI022300285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93a3fbf5b0de69a1f5a6d05dd4d8fe04ff04bba76602b6a4390cc1805ab0830. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ITI022300253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b91963e7fcdc4788b6e24d14959e9b6b5af5b236e082588ef3acc38d91df4d. 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/ITI022300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9674b2ee89a847ace1a6d0c572c783518799b748586b38f2d9179367d48fd5ec. 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/ITI022200337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344f2008a3fda88d7df2d351da0520d78e6b62e1baa3665f33eafcdcf6c3d7bc. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ITI022300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918c1c5d0633e5f37d1c0ac7cdfd0d2ec1dce21343eb4e3506c3df7b71e2e262. 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/ITI022300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eea6b6cfed6981b27c5a42b3b0d8631c849bacb2020ef0a734bb06efed7ae65. 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/ITI022100504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76172b833a24b246c709368836cc4b2d6623d506f8b92faa2e4644650f258aa9. 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/ITI022300482.
Can't Handle The Truth - The Unbelievable Two Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50003d1bd06b38242a0e14ec4b849901dffb716ad9c460e8671a93fcd2001b10. 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/ITI022300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994c3c0cf8b395fd4ad6b2ef852a266384d95a7ca6046b9e85f22d7a63f5ddc8. 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/ITI022100619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc986c5632c1b2cd3171ed3cae53fb4e49a2cbf3779cccfdb0e3228d1373aa58. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ITI022100351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34fe0294c0637e4718496bf4c9836784e0be8903986977865d20cc24514cb94. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ITI022300481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647d474fa6e286479c0122af4aede1bced6eb2d4a948f3a635583128fbf7c168. 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/ITI022300466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf663df6385988a7af741bd0a0a6a7ff6bfedbb7b07a10f9c5f03cdf0047ddb. 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/ITI022300462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764d0354df7972fe1e9b6bc34d03ab0646ae5ffc68f512c5816a5f1f938e85cd. 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/ITI021000391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21577e495bdf3dc6e0ce3203991c0942828615ad0c37ea59813e67cd1f38e55. 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/ITKM32000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81ef4b3c9a14b178735e40653cbb8c6ce0945cbac7240b5c203c382d8a03c32. 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/QZHN52342355.
Yacht Rock West Coast Style Music (For Your Aperitif)