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 0x4550f204635a802480fb13eceecf84feac1f140ef3083e3eba905ff96fe3014e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7795378-f3b1-4e3a-ac52-0becd067a37c.json and https://artists.proofprofile.net/proofs/artist/a7795378-f3b1-4e3a-ac52-0becd067a37c.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 0x1aa444ecffa50e94ec6edf15851b9abd8e2e939de5f1aea696c19d6ec099ce1a. 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/BRAPI0603405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762cee000a8af24d17a9c44342ef995681a5828548b663ca35312c1b2ac98f62. 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/BRAPI0603404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c8d6742163f2b61e7bd1f06dcbba064e21667066d2336a01790017db7c4c16. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRAPI0603421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972831948669d4a908320776eedbce3a0557222f0f64919e8ec22d89de5758d7. 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/BRAPI0603407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46de245adaa1a83e2dc090f0116846919f0eb9022bbe09f5a786c0da1ca035f6. 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/BRAPI0603409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b15c313b1dd2ef2fec2204902bd2d32001e1fb421caeba4d2e98c444dabd9c. 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/BRAPI0603408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239e9a4f2ef3ca48bb37292f1168cbbb1743d777c96fd6e8f5a5d8756b5add3e. 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/BRAPI0603410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4b924c0a395d36bca2b70fff2b6fa6b260cf89dec0bf6e1767c5a41ac24a4e. 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/BRAPI0603412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fc943930ce4ef6521d1d8e243d7863adc566719d22b40e1d9fee49cc2a7748. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/BRAPI0603418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ec5962ec2e3ea8ce841c0d2776f4782b91c5a6fb87d113b7cdd0e9ec6244ac. 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/BRAPI0603414.
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 0xd61e565a8f6cddcfd1b6b5648f16ee39875e395aa50262fb2f679e500cc876d0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BRAPI0603406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9053e620c4a49decd2697b2237eabc69d0546135a204a51f30e7570162c9888c. 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/BRAPI0603411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30d43f52f4bc25da288537e4fe15eca5446e1a4802931aa384ac14db5a53744. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BRAPI0603413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2a33ce3e8be41055997d1cf03c92cd51d13bc107eaf9632130ce9663a63ac3. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BRAPI0603416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3743cdee3fdc91d6f7f19fa2a637b50a179e9a157d64ce67df8f75ef0aabf67f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRAPI0603419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdf25a1ce1ab033d609a32b28c10cf1a3778098bbb6888c4543c2fb88cdb242. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRAPI0601275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87a70bb41135b8c9b36caf5d57ee7e4bc90b0336d368804ab84b87f47e8e1ad. 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/BRAPI0501197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc4978fef45d78a6c1796edf51ff5edc489adab602af37fa7f98332e48d2790. 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/BRAPI0301285.
Tô Indo Te Buscar (Do Brasil à Argentina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86971d205c50fc5beed8f1aae87d1a2a49affd505561702533515416aaa007a. 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/BRAPI0302073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399c19bb271a8fe0dc5669234f66e4a14b59e4bbcdcd9bd676356809dca1637d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRAPI0302075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a95ff78cbbfb381a1ae44ef4249df5297c849a8c0030d944d73ac077a758cc2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:28:08Z), 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/BRAPI0302079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bd8155e9de3aabe96732f3d13fb7138c33f2dc524eb8bf5a807d7a8fa014a7. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/BRAPI0302071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f92ac3c9c678b545f294c5d98f73864f75e812ee90442826ac6d1055703b20d. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BRAPI0302072.