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 0xbadfed4ac6bb7380a10d5fa13ede40b82a278ff47fa675354b6500731cfab6b7. 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/132e8ad4-784f-40f7-b9d1-737e68bcdcad.json and https://artists.proofprofile.net/proofs/artist/132e8ad4-784f-40f7-b9d1-737e68bcdcad.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 0xaafdec659d575bb1677046b2d8f9584b9381297a27ffdc9769982bef363a1397. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZHZ32256134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431eebcf0d827946de5d82a244530227d777c8b80a7e414fdf645b052f0ed67a. 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/QZHZ32256138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f97b3cb3e6fac33788acaca0916d4ff136e0e25c78f4f773eac71454ff448a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:56Z), 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/BRJNY0500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec853a939a32515826ab174d8f02132870839f9d39479fdb7ce5becd1e64ae9b. 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/BRJNY0500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d5e7aec3c8dc968a2e748f2b520d3d75e73adf71c977b5660ea851409ff6ef. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRJNY0500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f8e7ee7fbeb412b6f2f3bc2ab062136d82287178d82463229aa938236655e3. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:35:42Z), 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/BRJNY0500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce405b1eb03bf6ad1bd2413d8774fd18f509e3868e77aa85d5281dc2b1eaeb4c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:37:32Z), 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/BRJNY0500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d6babd0d9a2b23e33c4e8ee3600746fee589ff635cdce815225f07c2058964. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRJNY0500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d06d565f6cf094a36661c0ba418e5523463595b347a01cb115674738e31537. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BRA0O0800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd8d5e34675baf7cf373c380f1b7ee2e58a9826a9c4af2cf87bf9e922e94a3e. 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/BRA0O0800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2446e00f85f7b263ec7f390a0f265f498728a7afd99f476a782cee69b8197a4. 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/BREJG1300002.
Reggae Little Lions: Música Boa para Crianças
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe99212889bc5cb06bb5ae683e9573f7ccbd239292de76c9100c23538d2a998b. 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/BXTYT1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a7ec3aec843c6731b860b831b5162f38d0a25098d817c2797ed7e5352f3f7b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BXTYT1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e2df69113a6b33c7c8d8b7549f1dace1caa8ffde4277c9fc8341c3704280e5. 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/BXTYT2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2f749c092d612879d1fa484a5fed20ace8aed3fd9733193d603f046b345e0c. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/BXTYT2000010.
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 0x12d44270857136bb4ad0a96132ad4c849d1eb8803936ad1163f109389732ee5e. 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/BXTYT2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98671fac90822f27950eeed00527661fa3a556878d328f206681eee4c9167bc. 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/BXTYT2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68533ae63c21867dfebf6a07042322a2f9e1d361e5d7c707b946a2bc27a85517. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/BXTYT2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb34c8e233504e98446f20a7c3c4286c337413c42a2f59b78a67b5783751233d. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/BXTYT2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5c3849e0b2807d2a00ffac1cc634aaa17a63c5d28435c160050906edc218df. 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/BXTYT2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96438cee5225e27f4aa48be9df38a21cadb31f461282acda41d81152a885f38. 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/BXTYT2000011.
Hemp! A Reggae Tribute to The Beatles, Vol. II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42887cadf44bf21e929e03ae8a5f137f246d5374f7bdeb3958b13adaed772b01. 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/AR1K21300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5497a0e3c1ce478052584ac30a2c6db90378cb00077c693b2eb537850f328585. 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/BRKPA2300185.
Circuito Reggae, Vol. 9 (Ao Vivo na Portuguesa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b07b7aaf010db61d9fc35cffe4f2703860a483988b99fa33ab590bb1073865. 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/QZHZ32071394.