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 0x8bc934b41b32dc97fca3f91cc6d836d9f11aa7ffdf54feec3208023a29d58a43. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94795e8a-5d4a-42a0-9c8f-cb6e13f5771b.json and https://artists.proofprofile.net/proofs/artist/94795e8a-5d4a-42a0-9c8f-cb6e13f5771b.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 0x9796033dd35a229398d4e4f54ea38e504ec600eb8428446b897cf314d5e66103. 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/GB9TP2110030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24d4ab880dbb847bcdaf13f81f8f8d0eda0b5710f7e2792c063ccbc42b3ffb1. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GB9TP2110026.
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
Il Ratto, La Ram, Il Gallo Ed Il Serpente (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a10d3f52bfe2f64b60494d7a2f2d45e7c1ce1a9866c8699a062e327087f1d0. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GB9TP2110027.
Everybody Knows We Got Nowhere (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f45a4ec698c92403a4ec33f3fa26b1390faa3204c3bcb81e90b1697062e760. 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/GB9TP1000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c3c806f170e52caab78e2cdb29f748e7202e0c2c004d5a4e959e5a19bc9dcf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB9TP1000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb985427f59bbbd37c1ce7d5b45539d41aefbed5e48e8573ef907f6c00ceced52. 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/GBCAD1100306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503f2f8d13ddd928758d9d128e10b9739ce383010c96b14ecb85e78ab73be8ea. 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/GB9TP1000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6fbac161a653a04d714886b24c8630ea32117b027465c1f41326c7bf308347. 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/GB9TP1000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a3bd437fef9197a5ac21cdf4dbf2bfc1b25c3f3f0aef84ef3637631d4066d0. 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/GB9TP1000104.
Delwyn's Conkers (Mark Radcliffe Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1874851b686c015a0b463d89e558a0aa6bcd7ceeae0a52f15eda49a97766620. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/GBCAD1100305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57de0c9f47f1ab7ffc57d9ce7632314629287c8636bdcb3aaf3927948c0d1a12. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GB9TP1000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf403727154ad93a85408ae4476d7bd3c046f86195f0c6d576d83d61f7b64309e. 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/GB9TP1000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397a7197fbd2f283190c87f1704857ab8782882a3c378e7c184cf2a297546d6a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GB9TP1000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fb96f97587bcad6e1881310b17a826b1daffc5ed401e6d620f0e27ae2e087b. 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/GB9TP1000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee3602b0ba76e2618e9a2b2c7874d1f74e0e2fe84688614018350133ed45788. 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/GB9TP1000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a55d6bfb0e490a1b8f6f6377700d56be44bf98364be491ca64125ce1bae378. 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/GB9TP1000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548c68558e3731373069b64d58a925839bb885bdf54a9a85243a6f11b6ef0ef7. 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/GB9TP1000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184e8f2ed88169c9585463c1fa8e6927afc011bc3212bff445cb82ea9ccfb95d. 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/GB9TP1000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6517a6ea7b123cd85e839595df33f68fc3b082aae62d539be6a42b89aafca2c. 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/GB9TP1000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afd3f1d35daccba4f2eaa68e016656f7839268420cbaaf4ab70233e4ce79971. 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/GB9TP1000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20773bf343784dd70af4148ee6cc9ada737cf56704a57a5e169853864ad1be18. 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/GB9TP1000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a49bcc55ea7812bc883b353f98e65f28029e3d1de8f8dc1c08b9bfc6ef3493. 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/GB9TP1000022.