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 0x76dd14dfd459156c2774d19b7163bc0ab243240f5f6c356a9fb24c96013df5c0. 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/b89dba06-dc9f-467b-81d6-5767fae5ec2c.json and https://artists.proofprofile.net/proofs/artist/b89dba06-dc9f-467b-81d6-5767fae5ec2c.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 0xddfdb5680eb8944ab7a72c2428dd32492e9978f3f8fa495fc749bce0400b40de. 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/PEMG91903001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592f50ccfc9d609730cf48df4dd80d0d4ac5826027419b68dcd0f471e1ecd1f6. 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/PEMG91903002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a2d26adac78763fb3282ea178993046762b1826d5ac01f0d3db9451d7acdfe. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/PEMG91903003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227c3f07f54a03a46d2c8010ba3a7c58f76ce0adbdb2abefa13f05060368f457. 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/PEMG91903004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321847c9a325b30b320ff4f76aaf583edfd7ce1e35fa485af163939740ef44b9. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/PEMG91903007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdf097d26b7675b7cc8b99b9c4054d4feeca9352c948f202b3f5336afa02272. 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/PEMG91903005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6b01710b8aca0c7b5fe22fe3a0b10cb94a6d19774d5770ef86d1bafee968fa. 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/PEMG91903006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d63c10673db8b5982765efad2027ff06deb3b2a3bad4f16ebe25e54cec69ca. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/PEMG91903008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9f1da0c5fc9d61ce60c4af87f9debe07b1e2144ed78a770215f2beb8d0411b. 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/PEMG91903009.
Tribu Ancestral (Compiled by David Madrid)
Tribu Ancestral, Vol. 2 (Compiled by David Madrid)
Virgenes del Sol - Plastic Toy Sounds Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58cdaffd5e2c94c36883d3f3639ef28318ff980edba73bdfc3121c465b8988a. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/QZW9K2296711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd8c126c95da53a9fef1b37cf813d7ae684236ab2e7d9d566545eb3fa17fb07. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZ5AB1713103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0a40ae0f60c189381a40759d5500f79c05784c27d5b97d9f1945fc5ca41e2d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKXN22537900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac0c299ae395cbedaa671fd00bd9d1ca427a85e314ae4a64eae5bcad4899023. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GX3Q92575199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a63c2b61a31214542ed1ac4c7328eedc1d407c66e1d9a16678f06f0538efc83. 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/DEM091700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8346da6384816453299d3e46a892e63750701fd079fb2f1efbc31a62a2d814cd. 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/FR2X41636902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0377f8c8d700cfc183e30c091b4257113491f5591d0575d15826072c1137f54f. 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/FR2X41636905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf992b1f78caa50996c70c3d24abb2698ebbb26520aa1df5651c8481edaa3fe1c. 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/QZNW72378045.
Mono d'atraççionê - Tribilin Sound Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55443317f684fda338d9189747ca6903bc635357df5d5e59bae00a5f794ca3e3. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ES09S2000306.