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 0x05ac56a62d6383374209b78466d8e505d9f56e376192e1833922dfe6430b31e7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a975d097-ea16-490b-abe6-1bace6bf15af.json and https://artists.proofprofile.net/proofs/artist/a975d097-ea16-490b-abe6-1bace6bf15af.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 0x9a445ac19e73689cbd5c2966814aeec62aead1ce126580b3d89876ee963737ec. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLCK41016277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0ce39eada20a0ba6b967b5c732e0763c518d6cac9e2d2876e9f68b21bb0500. 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/NLCK41072237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d34d479cb601bef13a7915511ce7cf253696e0179370cf13ded077cd5a9254. 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/NLCK42222079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73790179973abb3e7eecab448712ae6886eb187af4e4d2afcee8607702c1a89. 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/NLCK42221918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1614a011c7fb955fcc4e2d33d5ebea4118c4ab865e77ada9c7eb08de2a200f. 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/NLCK42221913.
Colours (feat. Diamond Eyes) - Feint Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d486e1f812806ed8fe5b25b36e7d46638edea2529e9bd1f681be99b638ef1d. 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/NLCK42219766.
Colours (feat. Diamond Eyes) [Feint Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d486e1f812806ed8fe5b25b36e7d46638edea2529e9bd1f681be99b638ef1d. 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/NLCK42219766.
Colours / Still In Love [UKF10 x Liquicity]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea7783a5935bedff34dd5be06efc9ca12e9a18790170b8a8931124bc8da4081. 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/GB2LD1900270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e5c579e2183aac86322d8009f79eda8a4e79260393f445044c620046a9d657. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:59:33Z), 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/GB2LD1900271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab2b59d9fec4d14e1327f2b009deccbfab699e879a87cd7a2ccf9f7641a4ebe. 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/GB2LD1900272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192c13c1089b3f644ce752f0c3fe3db4ee61d2ea86b68b752694e9ae72b063df. 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/NLCK42228774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0479e17def151d67ba4267aa4cc91210fe251711ee33e8c831a8d755581bd9. 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/GBCJY1800094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dcb905a6417355cef818fb57dfefe6cd52f3689cd2d804914a2a058b81ba38. 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/NLCK41085912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8930ad1be177789ce321343a2c0201baac10e0061fdfc7268372f38aef955922. 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/NLCK42219246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e1ab010aefe505e2fc2c133a59cc5dd2e01a449d4d77b2a64d26ba0b2b3d62. 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/NLCK42224487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda72811bde0003e7960e4a2647f2430a7363c2555c9fad4d2c4bcde49b7be3cd. 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/GBCJY1400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5457e7a04632f254c0b9a74a9077710d340e3ca7644fce4e7361b5bd8cbd39. 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/NLCK41024666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2874640245465c02a5b7776e607cd465fd8ca813df12a0a9144588f8b0fa9f06. 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/NLCK41064396.