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 0x2fb2ec441438bd3b3384cec7295d9b41193391ad1fdabde227d4148ea6f835f4. 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/46a89ccd-ec83-4267-b6ae-c3932dbffd6b.json and https://artists.proofprofile.net/proofs/artist/46a89ccd-ec83-4267-b6ae-c3932dbffd6b.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 0x157498c5665c564d43f05661178a8b0fa5c096b403c3d454ca3b51fbc7367bc2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/IENNR2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df857a2ab73151c71a6355cc2bf43557c6fee777ef22d887c9fe7f40af3185a. 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/IENNR2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2e9904c4bc49b049882cd9d85ca211b4c4c889201e0410d93bfc632f458899. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/IENNR2400003.
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 0x302fd47290e9598df96e645840dfcc8851a36cb4980fe2d46bf51098cc8f1641. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/IENNR2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c3e2fb72b02ec34a3974080957b400fb92a4174bcf310c77d3615544eff50e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/IENNR2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0371afd92f4e1909882127347fe2f884c0b555d06057dfa03cee1b2285c2c098. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/IENNR2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccca7422fdbc26928b78ddc843f0b0ca58ecd881ca814f57903ce791b07f4cd. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/IENNR2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b089acfa1c9894791a627413b52ed84253126aba57a8e07b5e45bd0bc2d5ea6. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/IENNR2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced02acb1d0808dd6f634299ac0615da8e23f28cec9d88fd600a962014c7fdce. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/IENNR2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c20d5c6c8d7c22dcb0712d49133a3f76f6844fa802ae9767359529407bdd8f0. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/IENNR2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca9e2f6d8ad463bb5407c970c63183af0ac073a0e5c83ce5e3217343129ec84. 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/UKL8L2001110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66df73d1b55008613d683948fe1abb9064fb225c0b13a8b012dc203cf537fa34. 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/UKL8L2001112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc31c772d656c4bc94e6cf97a492ccd24cbfb71e7f78f9b8ac5a752577861e22. 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/UKL8L2001113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3f3b37e804a6c383095d844a3be3db7af3da1e31dce5a7b3967486ed8f950f. 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/UKL8L2001154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf66e9602ef7a03eea1b9715dfb3ce4d904383614dee92114b1d5de00da313bc. 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/UKL8L2001109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1c218c818c7b7c05e20353098d924c4251565c03a15374dead104a846cc0db. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/UKL8L2001111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7089c3f8aee7ec8fdb2d8d3bfd33dd1b5ae5823bb8168cd7d3b51d7e8fb600ad. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/UKL8L2001114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa407e108543d6fb0210bddc945c75085951c5bac2aa5e4a90cb889dec22e63fd. 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/UKL8L2001115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceb5de629487ca641c92836f94a5087deeeb363fc22e6a2d4579ea5f9fe2083. 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/UKL8L2001116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b06ed5176ac9e2f9bdbd8282a9e443647997cf15163c288e49f4196d92696de. 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/UKL8L2001117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f827c784385f81a59ed0b42915f9c8e9d7690472f120c7b6ef6e2d970661fef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLFP2478912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55932ce59d333e28e354048698b353202c1c7bf91b11a525c404e9de41053291. 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/UKL8L2300090.
It's Alright Now (Black Drapes) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd7a79d068d5cff7f9147dacfa910462cb77059798e45e51a0927aab77c96c7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKL8L1801027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1da59ce0371fad65cbe15d92e9e00833fa93834021ab5bd771792fcccd81ef. 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/USCGH1901678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccfc56700d8d9d211779630e222419abd8b4c3ee72cacf1be9dcb8037aa49d1. 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/IENNR1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06ae5ef52652d50eca7ed143a8e9127150d30d64401dc00a61a0e76697ddf63. 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/IENNR1600002.