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 0x22276df13bc1b2d4592194a25ef163cb93e45d61045f7a09b4b0e4c9a7a704d6. 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/f2b45e77-ca37-4f22-83c9-b766297b371d.json and https://artists.proofprofile.net/proofs/artist/f2b45e77-ca37-4f22-83c9-b766297b371d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
L'Autre Dimension - Club Nowadays, Vol. 1
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 0x923e0aae0acee5411cfdb387bcec4d917fe57ffc43ed67fad97fbcd866eba1dc. 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/FR0Z42101090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923e0aae0acee5411cfdb387bcec4d917fe57ffc43ed67fad97fbcd866eba1dc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR0Z42101090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb3694c91192f449e9d8ba76f4770becf078fc8f71e59a0f262adc1b425c8a8. 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/FR0Z42101850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf714fa3ad06130756bdc879f037f91a0ae0c4d0134a1beefade8593b3f3149d5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR0Z42400752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc890e55063db8c77f1d32adc5a0fbe5ce38f6c13025e9e40fd80a1d64ddcdde8. 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/FR0Z42400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf714fa3ad06130756bdc879f037f91a0ae0c4d0134a1beefade8593b3f3149d5. 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/FR0Z42400752.
ah aͣhͪ aͣhͪhͪhͪhͪ - Club Nowadays, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b247623ae4857fd7b1ed3c975761bbf51da599a0ced8e5d47debaf793e406c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR0Z42400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e82322b9cdc4c5ea37e8902f91cb01d9ccbeaba1f397e29af11027943a9203. 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/FR0Z42400340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca5260ff45429518ed880accc75f6328157db68fb6658cbf6f4c1acfcbe86aa. 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/FR0Z42400580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09d4450def4519520a7c2f83221352317c3112fca5d57dddae3fc8ef114a1b6. 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/FR0Z42400590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b726726a6ef885037dcc26d07448aaf4fa8a925cb8e6776a18aa0aa4167f493. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR0Z42500320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12335db69e6fc60446fc104990e337dc7553c11e3492d772f2210d6e94d525f8. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FR0Z42500380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b726726a6ef885037dcc26d07448aaf4fa8a925cb8e6776a18aa0aa4167f493. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/FR0Z42500320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf714fa3ad06130756bdc879f037f91a0ae0c4d0134a1beefade8593b3f3149d5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR0Z42400752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6fa9b7affc0b490b2565a9e90fddf7d2d3a43d9c0d5c6050b89b1a15191235. 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/FR0Z42500410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bc0fea9bdbff88ef4705faa7ad6916a29850cf10d5a9bf0af762adf11fd13c. 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/FR0Z42500370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa31756048d47b4657b5d5ffc851629d0f0b574b0f1ad2196f788daa1a8e8e96. 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/FR0Z41800170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ae7f75890e8a81634feea1a27e7f35dde2ec2d57c4c3763efdd0e103494b4e. 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/FR0Z41800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa3db4943a786c195cd1e64d0480e0126b010c7df133fe1e8563212f8069ccc. 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/FR0Z41800210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923e0aae0acee5411cfdb387bcec4d917fe57ffc43ed67fad97fbcd866eba1dc. 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/FR0Z42101090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea60eef8ebd8b6bf53713aeb31ec65de95740924879b79758fd1d6f9f8dc99c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR0Z41301002.
La Boulangerie, Vol. 3 (La Fine Équipe & Friends)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baf953a02ff998c5e04ccbbc2f859e4d1822e3a2fd4d61bc71046107217363c. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/FR0Z41401406.
Just a Lil' Beat, Vol. 1 (OOgo & Chomsk')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94e58e5700d860fc5a9e4afe37fe85640ddfebd92db656ec55293a5ddce3831. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FR0Z41200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf495c0623402994195b35fe790b06b836657631e5a2aa5756a54929d4ee24e. 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/FR0Z41200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340cd60569351087f247476d98024e39d579bf036e68b080a31ca84457a303ab. 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/FR0Z41200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305961c76798fab1e8ec30fb6c2cb94eed93815756f9ed4a6004ed056e3bc48e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR0Z41200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3a035d6f005d5230abb83b5f6d5e673307d30e04bda60e0d5ac6fd6d077c23. 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/FR0Z41200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202e13ff7462b4227ab4f4916ec44bae36ffd18fb562362928cf9623ccf8694c. 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/FR0Z41200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fd363949e77f0d7a7f07663e920473695015f6c7290dc5545fd96190814fbd. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/FR0Z41200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeead033a6766a89158e68f44b923a221aaca2202f5667bde8b71a9d7c0ebfda6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR0Z41200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceca224ee91acf5818fa53170766c57df6a5688954c16723a7c18f8b802941fc. 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/FR0Z41200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd250c7618a1480be0afa9aaae9b870d829afe3549737cb517e47c435f49e42f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR0Z41200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecb71810acea61d043a4747ca2dafe9c8994f86b2c455f19bdfd74a149e12f3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR0Z41200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75159c025be316772c6e38b4e251db4e5823ab7ecfa689fd875edf9db0f58fa. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FR0Z41200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ed619e116ee81405296133ef71ee8227602059045905e27c38d69b9afd13bb. 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/FR0Z41200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a54adbb29dea5bce827350e394b187d12352246419557695074ee84463e09a8. 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/FR0Z41200113.