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 0x6181196d96202ccec627b14106a4a11421f16ac567fc7119b9c483ec47ed36da. 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/df643219-9b2b-4b20-9315-bed4c68eca09.json and https://artists.proofprofile.net/proofs/artist/df643219-9b2b-4b20-9315-bed4c68eca09.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 0xc12a0e44fbe73fa8d128e7379a583645844573d7f4c55f1550e64a68984ccc11. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBEUE0801330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f6ffde9a4c2138d3e3300ee4026f4de4eb617d37eea92b9a1605c9795b15ba. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBEUE0801326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581027f8d9d37007a788ec66a1763340aae7646c4074127b54cb4fa153ce86b6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBEUE0801328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bdd9a71047e5a14c6754acb4317c120f736efca7ea1781e84e43b677b17c16. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBEUE0801329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b74231c667efa01d55e0abb8b95f4fe4449ff0460e2a5e9655912c349ca662f. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/GBEUE0801331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd21377004f562b30dadf5547415736fa9715ffda553d4a06ed1af0a5fcc0cf. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:25:39Z), 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/GBEUE1100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe296453112c437082414705f3f849b8b49787c059bd483487ceadcaaa47f9a4b. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/GBEUE1100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e0356df6e16a686c00d4f7e0c1d03a0edcc1447e758856859d1ba581899a65. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBEUE1100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae57430d88fea201cf5bf485959d0ea00098a5088a72387bad97a068a60205a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBEUE1100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed90ecd8a13fbf1e688373d2f476e31554cc6ed37f88b55aac8e3c14d374a71. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:35:52Z), 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/GBEUE1100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38143a44814082ed0ce01d3c1a3eaf6d61d7871e75e31adc7ef9390bd69c86ec. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBEUE1100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e09991399ebc23f39aa619277038c150dd90130fb8315e512fbcd3d9828c22a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBEUE1100019.
Chill Out Masterpieces 01 (by Hotmixradio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581027f8d9d37007a788ec66a1763340aae7646c4074127b54cb4fa153ce86b6. 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/GBEUE0801328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b0590a435fdc5ea7278a9ed77dd04448833191c028879a8e5239de22a967de. 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/GBEUE0600436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581027f8d9d37007a788ec66a1763340aae7646c4074127b54cb4fa153ce86b6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBEUE0801328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f0a6386e9b01666de56b982ee702cf746898261cdc07741a2b141917d5363a. 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/GBEUE1100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a44d799b4ae476f7fbbf4d5f30ac561590f8c22b29fb1b7e4a21fcb7c5ad2fb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBEUE1100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce0d076413ced5414e8a65adce700ff0eb12df58385142bc2d26429821c5949. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:02:23Z), 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/GBEUE1002127.
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 0x07539974927665501f4ff6f7ea13f58707d91cef1afeb0d160b8992c3f683188. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/DEEQ71911911.
El Chiringuito Ibiza Beach House Sessions, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ba27882080469f60ef25da33ef9bcd40b67fef64935c46f6b34bd1c48bf0aa. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/FR4GL1066426.