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 0xe597c2b0e0edc99119b9fb92053fed8271c908c0dc7fe9905eac09f4940abd42. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26f220a0-03f3-4fd9-aa3c-0fdda3245c65.json and https://artists.proofprofile.net/proofs/artist/26f220a0-03f3-4fd9-aa3c-0fdda3245c65.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 0x61cc5fde2950e048d98967cab08963eaafdcc8fdd66336a8ee05b19041b41dbc. 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/TCAIV2454195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03df3ece1f2cf343264734adc1001b830745e9f2a37209256477cb1f2e7c34d5. 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/NLK2U2100447.
Hey Bolle (feat. Rockywhereyoubeen & Vlado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a771890b465942729dd9fb161d9e328c3dce07f4bd6844bc77713a31ddea80. 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/NL5HJ2200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cffd42d8f1e1a6e50a7d9fcd550feab19033a73028dc2eab711ddf4e07d908. 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/NLD322000179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d40a8478485b3bf7065b8ee3433946ac6df37e35c2f1a8e0da14e5f6131584. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/NL1EW2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c4b2750bda6ce38ae59acb1a0d4a203d9b41a1a9ffaed57426234e6c1d44bd. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NL1EW2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030aba7d6223c5c04fdf73a5eb07cdde2f60be348f5ea7a2e6de4a714836e91c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NL1EW2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4da1343589031e806f2e5d0c12d0a9a5162d5688093686e5e15a05eec1cbd3f. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/NL1EW2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb239a300559c7e6cdf89b5304c66dfd6c295f175d219c6d8e71dbf7878202d47. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/NL1EW2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3416e86ea13b8553dc164419ad86c044f0af674d73cc58d087228f0efec8674. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/NL1EW2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1620f06269f370ec8941d8f53d3e4892fc88f727f94fe92f6f66859de7b04cd. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NL1EW2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444e22f532422fd0312aa0287ef85c629ea1b44e2bb4e6b88225d1186f046ff1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NL1EW2200001.
Blicky (ft. Vlado & Rockywhereyoubeen) - Remix
Blicky (ft. Vlado & Rockywhereyoubeen) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4443579342778f5afec1d5d81398fbcbb57474b8c6e04638c4fdbfb43ef487f2. 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/QM7282368339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1620f06269f370ec8941d8f53d3e4892fc88f727f94fe92f6f66859de7b04cd. 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/NL1EW2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4da1343589031e806f2e5d0c12d0a9a5162d5688093686e5e15a05eec1cbd3f. 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/NL1EW2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ddf456662dac1cade00049b5c735ccaffa5aeada2a2fe44899b223a221232a. 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/NL5HJ2200436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdc8c02ee2f016334bbb2a07ae2a67bf0f5bb63a70ab33c1592976f10184e48. 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/TCAGZ2344726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1277dc3494eaf7b1c07e0b602edd6e344aa32fa6ef7c4c92c3aa209b5230de1b. 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/TCAGZ2344729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b893e0d894139854a060389c1d4a937684124faf00bbdf68451e31c05949d7. 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/TCAGZ2344730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe214972033db36040b58c4002b7fbac46e8b303a8ec464c5cd41032d1fb359aa. 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/TCAGM2219923.