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 0xcb0f0555f0fe6b196b4d87ce68f58076dd0a926dd5b69d25a677f33a8c02fc20. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3aa6aacb-1944-461a-92f9-df4530cd39a7.json and https://artists.proofprofile.net/proofs/artist/3aa6aacb-1944-461a-92f9-df4530cd39a7.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 0xfb5c18ab6197b91843614aaa49e248ea3985a056d1dfd38ef323fa51a117952f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DGA082299100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d5bcf65a88b603563f62d84cce582586065c7dcb28e6e2f687d7d253c85af7. 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/DGA082299102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ceca4976076b6ad2a1463d642aafba7f8bf13fc81bf28161707b8f9704fb4b. 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/DGA082299103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8300fca796f9acdccc8a6896e49ff983e7bb7e2109030cd0edf543daa24b19d2. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DGA082299106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2dcf648e253e2c8b784fdb8a7f60509f943cb5aa212e4312cf2606b5909c4f. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DGA082299108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b922d753404baab6a8d84d433c1922eb33a0276c577156bca7baf579c1d72c. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DGA082299109.
Where Do We Go - Paso Doble Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04aec1079258d841e04ba6036cb66eff55d365051e91887a92b177eaa4c9c5e. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DGA082299112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0ef518aeb77de01d2badd39528f0aab3248948f7093e11003fdfef17d92050. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DGA082299116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34166e9fc37e8c165f7dc7b0e37650f7186289549a1fa543d1bb65a674c95ba1. 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/DGA082299119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4d6245c6a76f46b2f41074fb0c8660a80760c1c90585e5795724effa687e8a. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DGA082299133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5546665349e35ec0364dd1bd22e5679047e7a62581a1d50f195ea2bde23e0ac. 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/DGA082299134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4c2fae2ca76f426cf294da5d69862c5b829ab72bbb1f1a04a7d91204422f48. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DGA082299137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92f88e713dd7dab787521172698c29802f18b362fac8479b0be036d3d08e3b8. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DGA082299140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe61ee15de182901d742c9e094d7a2563d5d2f1c8c86950b77c64aa65249c375. 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/DGA082299143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b203172b5ff500eb65ec528702706a0f3ad1cc7d190e7e2a123aa4aac4d588f. 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/DGA082299144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509a4de4337e40d07092ad49f65445430d6619a32aba6c2693f85d0bec8edbb2. 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/DGA082299147.
Another Brick In The Wall - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677a8d0b6cfecb8cda9e24b330aea37f10c0efc11d62f646a1561b97d5fd2c96. 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/DGA082299148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba2eaff738fbe74d09f647d5c41f1fd833ba52b1458e6a06117a206241e4ec5. 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/QM7282466128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927ec904549e9caeb6b5b9b44be947eeca45d51bf55587fdfb9ded0b7013e3e1. 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/QM6P42428929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6549d6e5d35674d5f7329c053b95f3045cb1d0d4bb4f56558ecfecde4c9219. 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/FR59R2287918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e2b84c082b6b70014583545ab241b5beddab5ed1833971cce1a6adca8e7393. 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/FR59R2287919.