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 0x8c9eeeb663946165366632a239b114979b27e35d1655871294081da0051a3fb8. 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/3e58887d-282e-4de6-81d0-4db95a5af99c.json and https://artists.proofprofile.net/proofs/artist/3e58887d-282e-4de6-81d0-4db95a5af99c.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 0xf605e4a9fcbe141b97c308285e5d53df5214b675f3256cef62b4eda7a05347b4. 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/BRUM72200875.
Horse Meat Disco Presents Disco & Boogie From Brazil, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8137f7c4fc2984e23c0ebacbaf173e0f44e80054d5b80ad5dce2c3129eea01. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBCLQ2201404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e88f4a46960aeea626581601b7dfc82277e05ff283bf5d4695db9a8cb305de7. 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/GBCLQ2201405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260d66ec7eb7f8c1fca839bd30be10102310d3464da65161ab6b478a31e5ee0b. 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/GBCLQ2201407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3c0f7d9f1967d6c01d8af6be0261aad7b527ecc6baec477c472dba7ff1f38b. 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/GBCLQ2201403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896601c5b2eb7766bc9b8919df8bbdad32a796bfa0b5102cfe80b34617e781c6. 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/DEP962000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcb1bcff1946947bd04d6068126c996888ef7b8f5ef4abcdcff43682c7a043e. 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/GBCLQ2201414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ad716c9d442743d095f9cd4724e6fff7cb91157472ffaa1d958b877f52aee7. 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/GBCLQ2201413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95db8f3044e8f895c5d4b4b3f3965fe277803343fcc3be97aaf6813466115e2b. 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/GBCLQ2201402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cf485d462063aea471491e51eca370b14805679db6bcaed31accdf008010e2. 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/GBCLQ2201409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75215f9915bf780ab4bb30d81146df21514190ad1bcec2d9df4367320fa865aa. 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/GBCLQ2201401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8524d94571eec402538e6c06686daf4b063ddf3f927e33096edfc50b4688f19c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBCLQ2201411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a598acd14c0da2b9672a7304bd5c525aa51644ed0314d077657d1bbf425af25. 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/GBCLQ2201412.
Horse Meat Disco Presents Disco & Boogie From Brazil, Vol. 1 (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f3e0a9d122bb63c33cfc3102f8e69cd3b942c8a868e20e6dfe8e5337ea7355. 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/GBCLQ2201476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d63b985d7110e80a2e162d7d7f025a98fbe8a77fcb3c542e4af511858d44e74. 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/GBCLQ2201477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac21260b52c4d610a02cf5ebc1fdccb6cf8e70f4b19d400b2e2af78c5ecae830. 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/GBCLQ2201478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe03047954a1559116b2f08dbb1da6735845e7b36e9089d103de869259fa6d2a. 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/GBCLQ2201479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22874b0e045287b778507c8e9d02db204e1a1c405a061b6dc997fa3c78a2636d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBCLQ2201480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c2d1fecf521a1e525c76fdae8601134f18821716225a1b44dffac30397f672. 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/GBCLQ2201481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8553d593217c02e9165191b01823fb25ee5bd9c7bb8afae60450060000f5122f. 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/GBCLQ2201482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374b65fcb4a4d83cea226cfd838093c76df1c18f50cd038cc84a123abe2cc018. 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/GBCLQ2201483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2451e18cdca51662bbd5984717b2127e4a36ddf18b0660a03a13027f3af9ef8b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBCLQ2201484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5dee705e73ded73ca390c71ab329035e110dbb9a8fbb0aef75c7f3ea2eebc5. 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/GBCLQ2201485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860ada7dfedd98c17c393fddb8c1e5dd2231a4725652dce3e21dd891c3d171de. 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/GBCLQ2201486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e554aba6f3e7e2dedaa2d096f12e8a558ac45225c982f4ad6fddc1056e7dfb7. 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/GBCLQ2201487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba59e3c1cdaa08732d8393f35d9bb180fd57ef13027ea882bad0785a8a0530ed. 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/BREMI7500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd403001833ea492ef7fa431d9af6194e285f34f094d4863036cc270cab189f. 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/BREMI0400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a3825c368be69dc57c31d532c8bf57b72f21f025e03cf3afd7cd833fda2216. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BREMI0400518.
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