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 0x42f0e767adfd848e624d23ee93ffa50640f7edb6667686f09e6f8bb1dfc646a9. 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/462a2c46-4949-4771-adc9-9e4c109e290e.json and https://artists.proofprofile.net/proofs/artist/462a2c46-4949-4771-adc9-9e4c109e290e.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 0x31134418a47dc99fa5b941df28451e1dcb91304070077f9bb6074fd624d96eb4. 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/GBDCA2203975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccd1322376995840672ad02e41fcc2a41bdff3fa428895739579fc2bf16d1d3. 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/GBDCA2203976.
The Power of Incredible Violence, Pt. III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606b6a3658d172d44af8406f5a80bcea7e7f56ed299827cbf506c71b7ee757f8. 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/GBDCA2203977.
Do You Feel Like You've Been in A Lot of Forests?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4780953375391ad8e994d9cf495ac3d527d781453369caeb1044d20dcedd8bd9. 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/GBDCA2203978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87b1bcb70068bbd4ec8f76d9daac04adc8551a6ad2f2e26b233984b1dddfd90. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBDCA2203979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc0a27b6161cb31e93211d78cc8f263cfe76cf3aa25779d689c25c627c33304. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GBDCA2203980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c71e2e38ed90658550e4255b0b54927209471580f7dbb6dcce65d970ec9487b. 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/GBDCA2203981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15e23098f8f9afaaf32aa0eff4b3dab1dd0ee6af98e79d1606d98982359e116. 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/GBDCA2203982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64aa5ffec52c24cc96893b317701c99eff523e0a7f46fc341777af56fbef598. 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/GBDCA2203983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ff41e925eec018c829b69450bca17ff696196f53e9ba7e0142afd52ca9f2b0. 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/GBDCA2203984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45de1b6086e16df90ee2cea8e63991d67c41aab0e342914d591578a9c16c51d1. 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/GBDCA2203985.
Called the Doctor - A Place To Bury Strangers Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa9ef09e15353c4bd6541e076307720f48936f14552897ddfc331ff5b4ca592. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QM5BK1900675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee099798055a5b59911f9a8649a91394ac888795c7d818857343eeffa286e574. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM5BK1900674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31134418a47dc99fa5b941df28451e1dcb91304070077f9bb6074fd624d96eb4. 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/GBDCA2203975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ff41e925eec018c829b69450bca17ff696196f53e9ba7e0142afd52ca9f2b0. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBDCA2203984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ff41e925eec018c829b69450bca17ff696196f53e9ba7e0142afd52ca9f2b0. 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/GBDCA2203984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606b6a3658d172d44af8406f5a80bcea7e7f56ed299827cbf506c71b7ee757f8. 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/GBDCA2203977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f0f318f4f75446639b7147790fa7b0d3baf271422d325b0286ec1e48a036a7. 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/QM6P42175172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299c4e554426ca2c44e30b9cfbc73097a0e823b3871453ea57c59775364e5fbd. 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/GBSMU6799858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e63b9c932a08d829e3191270344ed49fb87d1351d1376df01863eb5af8d262f. 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/GBSMU6799860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a683acaae7127a618dadd22bec00ccd884311914779676f99163e386d4ae18f. 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/GBSMU6799862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59a1d059c7fc12727c39e5ad106f4cfebecd1aefa0eb60d45969a689327b4ec. 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/GBSMU6799864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead9efe0a9346fc9759baead62d3279d4f3e6003b21b510d0ea7300a30acb8ec. 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/GBSMU6799866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae848d6f690e1ed14d1a4b5eca0252a7e3c8740b0bac6e74799c2e5cfdb358fd. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBSMU6799868.