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 0xf0d12e1cb33a6522fe080e947538effd4ed56b831ba94ee25956d049cf839941. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e393616-3a6b-4c91-b606-6de0bd6c1028.json and https://artists.proofprofile.net/proofs/artist/7e393616-3a6b-4c91-b606-6de0bd6c1028.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 0x0b29f50127234217868408a3b659ca69869280286471eed8a23d96843e02a548. 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/TCAIO2441127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03a625c6db2ef18dfb1aec4d39b17633874b82c965210783785dc74584576a4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAHZ2477634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe78194327a8a2e4d0624cf5e9f116bf01c90bd6e5a51fbaaef719eec5faaa3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAJD2597686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca69be887db459b2e42c007228d5f2e52b553b050a4ef13bd40741857d924d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAIO2468133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb454e906da2119a15844a3bdbd453ce5aca5b386f37af40a3764282111f8c1e4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAIB2424343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d680f5ae5e34a41bf28e3c62382e28e392cd0d5b9103787684589b94184904. 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/TCAIB2428319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1b2944c12a35365cb7ba76e67342f929a9ac9586e6482813403429d25beab2. 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/TCAIB2428329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11238dda82ace6d4b4c1c761ab4fa64a42ba521a54162a82e29f22232ae4c2d. 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/TCAIB2428334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06803e95e0c921f4c1c7d3845740774179a6164d0e57b2fef181021a474df0e9. 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/TCAIB2428462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112abe5e5d81208f2e4f4e083065175ff4f300d88dc898cd5eb18f70badae18c. 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/TCAIB2428434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928c5d0174e46e4ac63212f9f3d2bcc13e0b67e574e61a01e5ea38f73a0d84bf. 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/TCAIH2413932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd060182b7acbcfd29322ecea63598c2cdba48007f932683151679f528d5f836b. 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/TCAIA2442115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760d332f62d748915822ee3f58bf6f9623f73ffce177cde460d013ed8225770d. 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/TCAHT2333482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51d03083e5feb97d84166ef86c0fa965be861867eba1a3a76b99b1aa7cd936f. 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/QZZ792489611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc8af468eaf548c1aba02ab169676a184bfaffbcd4eebe36b9ed5c6d8ef1777. 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/QZNWV2594517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a51560b1eca2e654ad644d75df6f59fa0cf956e2c7b9d03f1b2bd9a9722ac6d. 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/TCAJF2565040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ff0ff669b8e0d33a54b629fabf23ad619f00685a5ffe8337866f9cf546789e. 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/QZTAU2548380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e6e08771bc657323f68801f3fa0d203fd5b0d7025253a6e9608a806b7378b4. 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/QZHN62541170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa502323dd104e56fe80d460eb3f270f9f843bf7d8734d8cfef6ff575d10de4f2. 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/QZTAU2548381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e56170bf3c9dcd2b076a6f2fb074aa03ffa169bda52ca8ed533110c01d5809. 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/QZTAU2548382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d39d5dd8a4a778ef4eaa55d8999ea50750a0276f35e0b7d2775f6ec173cea1. 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/QZTAU2548383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c57add12cc334b3afacd65fac1563d93db89ec2c40a3a0f748bd2a6b88810f. 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/QZTAU2548386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde841cd0d46378cccb8b2f77cbf77f298fcd26615aeb765b8f7d4066b3af05bb. 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/QZTAU2548387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa170042664d9b898c43f9af80c781f1154401373c80bdefa93872512e9b52864. 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/QZTAU2548390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f29cfc83fcf2cbbfcd93d3dcc0f46072dce52ab15cc82faf543ae899c64fb8a. 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/QZTAU2548391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c5b66a92774e11b2c29efe80190c349f327b281f615a254a55260f7d1bb9d9. 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/QZTAU2548392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faaa2215c04effc412767e2b7c68d7b2c48aa65c17b2f89e53a9f9c01fe3e70. 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/QZTAU2548393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589416a9bca4b945410119f3ea6fd3f41d101098d113f00255d4645f0d4dbae9. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QZTAU2548384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9807895e90f8cc30c398c52b862a248a70c3f79fb310ff51606931ab1469e7f2. 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/TCAJR2528895.