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 0xd954606194c1dc8a2aef36ec223e16c1b698bf65fa0299678618b4487767d6cf. 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/86f1bf6e-865d-458c-bb16-c1c184a9d8bc.json and https://artists.proofprofile.net/proofs/artist/86f1bf6e-865d-458c-bb16-c1c184a9d8bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grandmaster (feat. Tricky & John Tonks) (Durban Poison Mix)
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 0x03eb95901544887c57dcf43b08122259e50426da1530ee2b564b956a772dda7e. 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/GB5KW1702941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2513636dec51c2e6645d2793721a926840fa16142417cd4554b28bba85a5ddf. 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/GB5KW1702944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ceacafa7bed4db53dea75d0c0d6489b6536565a9508f9dc625174b10262107. 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/GB5KW1702945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1096172928af2d77066bb4e14fbc3b6f5f06c12d92c40e2a5de35af3230d217. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GB5KW1702948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe264778e33d02b428f1c8fe66b39b3ff28aa97592aa7e36b89670d742657a2bb. 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/USA2P1272466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c00ae31e7dacf84ea2ffa42f1200029f71e9533e56e5b5748946528c2fa0e4. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USA2P1272467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b75d797b8c234e469824dd843b2339e2868f6583bbbf6cd6ec1ff7c7522a663. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USA2P1272468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6accae9b9bd5c3633bd4b2da7436f8cb888e6f6eb1c06a257a68fa9573dc5937. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2P1272469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa75f557068c04d642ed493e157ff13bc67ac15f957e2e6ba73f3fd48526208. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2P0506219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfec9afa7bb11dc27ef05287433f5286ff2b1557318d5dcbbeb3e78f8942219. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USA2P0506220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2a9898ee0c740ef8a386fe36da703f3fdd7eb359172beffbe48fbc04b927c4. 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/DEL020480028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48fef66a6e7b48cc6722e5e966c460eb050802d2f8f9e3fac49d7d3ba8f1760. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEL020980020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cc8302d63aa5be5e20e7f30e308622b36bb8fee8b33e6330f4cd61cd5c59a6. 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/DEL020580007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ecade5a720f440707f2b1bcd47aec3b20ab642142a6dbdf50ce6a92441195f. 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/DEL020980022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d9d455ffd242483311b437b46d459e462c4212c5656ea30c8d28562856e400. 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/DEL020480049.
For The Time Being - Funkagenda vs. Trophy Twins Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd9923782515a0380c1599e9b8668b7a4eb63bc7bf85e631e88eeb5a6f26cd0. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEL020680010.
For The Time Being - Hernan Cattaneo & John Tonks Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40852d19d2574fa52741ceb5fda705401f7fb6a4e56051bef8caa861c6230b2a. 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/DEL020680033.
For The Time Being - Montero's Lose Control Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b9a56b53e9f34df132ee9785acb21c817784f67f328eb678cc3acdf20e5e7e. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/DEL020680011.
For The Time Being - Phonique's 10 Years After Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cf0b41b9c258f2a661af791e5ccaa4b51d411e056470dac329f556795c5712. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/DEL021380032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5623542f2764fa021cbd4703a6e31484448864c36d92ba53f89636f248cf97. 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/DEL021380030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b520338baf5fea7de2c64e86d15f44d4775d478d0ecc2f1ec2e15750d4795c. 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/DEL021380073.
For The Time Being - Wehbba & Accioly Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa411d20b2c1316b1303f5290b38ee4175818477b0a517edaae7137eb894c6919. 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/DEL021380085.
For The Time Being - Montero's Lose Control Dub Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8009d46a423026bbdc1f9671a40881fea52c3324948611495c57659bf375f60. 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/DEL020680012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1428965e7674b249f330d077ef06495bae2f52eaab556b87e7c523200017b91d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/USA560831231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af92dd8ecc9ed95cccdee74ab1fb153167a1edd5ae6dc4784d6dc3d5b7bc242. 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/USA560831234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6804483726baffad5033c69abba0f28de3e29a69d9461e57bbfe63cd2dbcda. 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/NO2CC1702010.
Cavendish World presents Global Grooves: Walkabout, Vol. 3