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 0x827d0bc3ccc297b20459af730a4f8ef9b86098421582f2bcdca7534b9ab2a41f. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4b28769-3c9d-4145-8ad9-58b56647bcdf.json and https://artists.proofprofile.net/proofs/artist/b4b28769-3c9d-4145-8ad9-58b56647bcdf.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 0xbb9662e5e8805b173a9a86847fd212ced0ca26960f1b9a03a73ffe780a4c9f30. 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/US83Z2027455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f01b820bf6d485799254f861c2b6652af601d5cfd9afa09ee2d515f872baf7c. 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/US83Z2351797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e462bfda612eeee0daaa4d7fedd50d1fd41519adeba0a5578fb727512eff115. 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/US83Z2473058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829344c4fbb7020a581996fe61668ae33d762298b01d87c7f047f439afadcf97. 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/US83Z2353600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4f99514b144015af8a5204f465f5eb6ce5a938f63d59c3bb404f5d784a7915. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/US83Z2461800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c705d51501936337e07ade8e52ff1c32be3e46c46a46adac7239b20b0dd945c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US83Z2349269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931dcb98bf08243417585bb89cc165b4df5aa08b54eb5b6f98517121d411d046. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/US83Z2470178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b67a82c9f0678c1f74d0330e1b03da39da54446a7616b3b6c7587c2c63e7209. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US83Z2458709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293e9cc67b2a31e44a233c404d7a054298d58d7a071bab101848106fd12160d3. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/US83Z2458713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a37d48a6d29f0748115e191db666be010ad136c851b197511c8b131ed6289fb. 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/US83Z2458704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86405718a5b459cca82a71964565d97b8e7bc561480b3fbad496f573833e296e. 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/US83Z2470179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077750d4c1d4cec1f9baaf62900e671c2298dc93f1c124cbe33448e7c1a43a87. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/US83Z2468229.
Balkan Connection Mixed, Vol. 11 (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4510f06746e7f8fcb872b894c5dfeb2397b1b7b00b23b49e3a554baf473419d. 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/US83Z2102086.
3rd Avenue Mixed 004 | Pinkowitz (DJ Mix)
8 Light Years From Here - Ivan Sandhas Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879c20bb4cf8ccca80a9ab2afdedacd87bf86e76337d7e06b600fb75b7fc70f5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/US83Z2200292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd86e66b3ede17372ac083187cf3eb28490a62dc9fd7f32d8b738eb25fae6a4b. 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/US83Z2132827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b67a82c9f0678c1f74d0330e1b03da39da54446a7616b3b6c7587c2c63e7209. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/US83Z2458709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe113d18d203c73b05513efcfcba9967fbacef1367784ea586b1583c88f7c4f45. 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/US83Z2458699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4ab43facf2cda6d1b4255b8a77396ade4a02c775999466532bb82f58a1edb6. 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/US83Z2458701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ad54d9bf58838eecdfbd5e5b8ae32009c8d81a0209261d14cd9375ac29fee4. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/US83Z2458705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b67a82c9f0678c1f74d0330e1b03da39da54446a7616b3b6c7587c2c63e7209. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/US83Z2458709.
Some Velvet Morning - Marcos Dermi Progressive Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2d36a73a76d1588b7f333567ed47b6070ab2ac8efaedbec767e778f5ed676c. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/US83Z2112669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bac0c5bd485b6871c85166a569400a3ef68d6d9795f66a4ecacb02fb027a863. 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/US83Z2145408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832b6e5765b51910fde3dd8775f20d2279b692da673e9b2a444dfa43bcd7a6a2. 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/US83Z2132730.