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 0x50d4d33649fab2203b9222937977359657abf66bb6bc123e18ad5d2b1ce9d601. 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/2f0bb2d2-3e79-4615-85c4-d7327f5683a9.json and https://artists.proofprofile.net/proofs/artist/2f0bb2d2-3e79-4615-85c4-d7327f5683a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Misteriose Voci (2021 Remastered Version)
Coffee in Neukölln (2021 Remastered Version)
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 0xeac9e1e0f9c7b332e35a109561ef15ddb5dc98fe0bd326e31eca104c535fe096. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:12:34Z), 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/ITF712000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486ff1f51fb8caa36ec44901025e4ec7bc2dec11aa34eb62ea69f09f063904dd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ITF712000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb44387f856f3b9ef453c0126032ec2bd3c133a13fc3c0d5c6effddf67eaf21. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/ITF712000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe038af228b20c744b30016d6e76792b03f61e74fb52d631c0f257308e23340cb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ITF712000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58f5199bdd959caa8d7ca5ff763b97cbab9e2481fc0dbe85adf30f018ecf6df. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:09:34Z), 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/ITF712000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6355c76a921489ec72fb8cc7737ba113c9cf88073813682c4dc6da1eaa7b00. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ITOWL2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265b7b6803577b25822dc0d01e5a0d5f05320aa997d1321358bf8557c3b9d1d4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ITOWL2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01e6ee7ca995353dafa9a23d17f8c54f1eadcc7ce1bab5dd40a9a0f14ba18af. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:51:01Z), 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/ITOWL2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaf12e748af146189f2deac19b34047aedc53116aad47d4326691bd22eb5c65. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ITOWL2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3436a619680a61688319e8d0bda7a5b79dd18032f71d2c09483279361dd1feac. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ITOWL2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e60c073378f51b3e3badd0209ce1cc663143bee9e54136122425e262c6bb45. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ITOWL2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141487207186050eca92c5eee08499a7c1e8da40648b10dff44953507fc4e9b0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ITOWL2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadf3c6ed091f3dc2cd18d0ef099d9f392ccb08bb2da0852d194b7fea4b0bf2e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ITOWL2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7406c7c4a0f6a8c2b89261b8c886edafec5bcca05e92c802f3bd199daaeb1df1. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/ITOWL2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96435332a4e1138db28d872c263ebfe45bd2a357e7a8124500a0b171c3ebba0a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ITOWL2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a63065fe9da632474ef7206e11e7419a47d9651fc484363253dda8c9a7df986. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/ITOWL2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4404318d773ac85ff54551074b6c4b11a15d3915d39d31810a0103c8a79cb95f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ITOWL2400012.