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 0x5181007fc763cfd1bc72775a85a1bcb525482990ffec9d2ed2caae607a7706e1. 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/c78e143a-90f6-4a92-9b87-a49db7193335.json and https://artists.proofprofile.net/proofs/artist/c78e143a-90f6-4a92-9b87-a49db7193335.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 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 0xf370ccf59391c47574223fb22c8a6fec3aee53382b885b0f9d9f349ba317ab08. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/DEA310909773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ae009078f91472bce5e8d0eb1e5aee35baaa59552cda4cf00ddfb35874b9ad. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEA310910127.
Let the Sunshine in (feat. Ann Marie Smith)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e168c23a4e8236d45aa1564350710c66e549046cfc3168665fac915f5d9645e. 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/DEA310907843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ee2d98f7084ce4cb565ee75dab3de3b44d999fcf0e821bbdfd5b36ff2f9482. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEA310909808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa867b9dd179da0a19bba58f4f3bc01c24b1cf06f1a6ffbb912a2caa1dd89526b. 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/DEA310909812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75faa290a0914359dc8f88c82e55a8f0a0b8a01f296144c45b170d3d7aae7b2c. 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/DEA312007289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3b56ba482ae4d55418b6f0f0a9a4065b810d4fce64def67ad3096f22d49344. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DEA312000428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ee224f51d36826b23393fb23258865284f5edb078356862e8ce2a7376da748. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/DEA312200384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2582f137f0b2224b6924bb767d9500a82f3d5597bcee6753f977a32daa3b70. 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/DEA312200824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff59481af518652188afadf351f114efe4d730d5361ff120ca41bf0bd3f68ff8. 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/DEA312200825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96cbbfd05daa296b5f8184297bfa15d068993832e7a85c9cd59e4845828b540. 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/DEA312400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6367fcb9de7c19d6a4660ff20da195e8197697f9d05112963ac3405eb283e526. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/DEA312400138.
Baby, I'm Yours (Gianluca Motta x Visnadi Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd61bc389261bae463536a4b90d321bc2c01855482cb32ad0ad4488af56ebffd. 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/DEA312500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf370ccf59391c47574223fb22c8a6fec3aee53382b885b0f9d9f349ba317ab08. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEA310909773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1891c563a38cbebd371016f22074be31ab8e8add3d9f5b29d636d34b66aceb91. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/DEA310909774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b74617cacce94b6904ded5fce0396e158f1457cfcacff885124d9a6368fcf0e. 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/DEA310904822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6367fcb9de7c19d6a4660ff20da195e8197697f9d05112963ac3405eb283e526. 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/DEA312400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82521e99edc5c2c630b34337440cf48be7a41d7aa8d25c4129e6a2cf49f2d84f. 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/DEA312007449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96cbbfd05daa296b5f8184297bfa15d068993832e7a85c9cd59e4845828b540. 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/DEA312400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ee2d98f7084ce4cb565ee75dab3de3b44d999fcf0e821bbdfd5b36ff2f9482. 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/DEA310909808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b74617cacce94b6904ded5fce0396e158f1457cfcacff885124d9a6368fcf0e. 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/DEA310904822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f955cd6cd6c81620255b8a25d06a5fa821536466a24de8eb8b81dee65926df. 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/DEA310904840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f955cd6cd6c81620255b8a25d06a5fa821536466a24de8eb8b81dee65926df. 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/DEA310904840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf370ccf59391c47574223fb22c8a6fec3aee53382b885b0f9d9f349ba317ab08. 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/DEA310909773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc844ba9c71ecb05f19c1009d7166bc0f42f9c3e4a54c66c4de0b6d2305c6aa3c. 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/DEA311601031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf5e54fda302b71847874f890d1191a3f4a467f976497257f7897189a8820e8. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/USHM91347918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12653132d1023e11e03bcadbcc994bc35d8321b7d6cdd59b63139f6c6a375416. 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/USHM91347925.