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 0xd6caea916878f43399110c6c3aa928be1ea373fc3cf11ba7c5871208b2b52c18. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b0e3b25-d03b-4c2b-a8f8-11acbd574c36.json and https://artists.proofprofile.net/proofs/artist/1b0e3b25-d03b-4c2b-a8f8-11acbd574c36.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 0x21e9f67c05285e247eb2e730c54027063c378c9b5806132f35736c383ae2a328. 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/QMYHE1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f876089ac63ff669de69749b5fe55b45114cac7b982f78360712080b583785. 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/QMYHE1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4310808414c5b9e764e476f15131b0447dc3cc05dd128105da38b2a71ebe4ebc. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/QMYHE1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aee831d6229dfa18ab6acaad1fbc14c1b9aaf40523256c74619b01d05a5291e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMYHE1100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9884a6766285807dd6b629c8aa4a74aad40c8f5afc0e7736161007b38706344. 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/QMYHE1100011.
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 0x85a01e77dd13ba7cdc81b06d23c9fa9a828853a377ee9a51349f3317d901e3b5. 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/US25T0523220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1c1587d8239e406b249577312a563170f230546b85c40438f6ea0c342b6a54. 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/US25T0523221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99235999b98e99cbc95de077ae34340e15f0b6e16a647067d024fb190bbf64e1. 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/US25T0523222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182da709e51a688c38462f74348239c5e7d0efebd0f7ba3f3289f29ebdc79b71. 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/US25T0523223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2207e9319a8731bbda5a97fb8b8cf90813e249e0843dafc20fc41dcf0f9af5. 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/US25T0523225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41929e51b43f09f218e5dd49b22106661f3f3a0c8dc374d9ff75cc30cc122fe9. 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/US25T0523226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a22a8fe877b4d18e7fbe829a7e726633f2d58c9eb6506f260d23959a1aa852. 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/US25T0523227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22d5e99ab06f9007147433a25b9491d0acbc0443236d553baf1d2cfad90f5aa. 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/US25T0523229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf60a343504931df358d9944d475e47a170615d1588772fd47430b99c2f4420. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/US25T0523228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c655e6bbdbe43e92f7e387ddc8310322406bfab64c8d0fe168da9b4de5fd71. 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/USJ3V1415804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f068c763ed15ea7db8f1e117c887838f864a1a058634973a6a943ee6e6212a. 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/USJ3V1415798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8d133d9cf7e6fbc3f4c2fb83cafc917c738b725f8deb4f363f4e24a5905f69. 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/US3D61800980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd9319dd745f5192e02aa0dd68ad7358fd170814e4c99ee95fbddc0709e8c97. 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/US3D61800983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda0046a959171b656213b2c09a12ce11b93c62694f75d1af05f8677e442cc5e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/US3D61800979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3eb6d5722178664ebb9c2f3d7531ebf76d4fc0314f8b043abd7056487442b6. 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/US3D61800981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62ba77d91602fec4c1106374e72fa2812dc09314aaf5156e5117eb05f5bd4dc. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/US3D61800982.
Jimmy Branly (feat. Abraham Laboriel and Otmaro Ruiz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5581651b160f56acc0bb3ca236af5f0425b7e7498510e2ddf633b7df816f394. 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/TCAJE2531349.
Conga Buena (feat. Luis Conte & Jimmy Branly)
El Daño Ya Esta Hecho (feat. Jimmy Branly, Kamasi Washington & Luis Conte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e82e678062feb105de3aafa745f79e5309eecbd78a581249681344efcb28c2. 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/USHM81379599.
Tamayo Tumbao (feat. Luis Conte, Jimmy Branly & Kamasi Washington)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bde048fab59b024610401a54cf790ec9f06122453f7c425c42e0f6f93e1f2a. 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/USHM81379604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b818917a158eac92c45772cf096497fbde543a4d1efdf125abf7b0db18cc981. 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/US3CR1501111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4aee516f278df990853bf92111efcee2b2ec92fd64bad52bfb57a1e7461bab. 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/US3CR1501113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffe07e85838b2d9b50aa48cb1fe2c835beae78dcb702c1d1540b94f56c207b7. 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/TCAFT2173636.