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 0x54b4ee439d07a6bbc8464a75451bf536036bc4ba4a8ae37ebb3d232bfa1482c2. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30e274bc-3ec1-4388-84ca-866d97ddc8b8.json and https://artists.proofprofile.net/proofs/artist/30e274bc-3ec1-4388-84ca-866d97ddc8b8.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 0x189cbdca800e7966737009ae60e07e23bc4dfcf66f278e9d24a28ce936007b7a. 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/ES5271502801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922b53fa44f0af4da857ebd68a566b9279874ba1265d6d2ee96981e84cd90ed7. 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/ES5271502811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ac9a2e5d57b00bb299e1dcde96b6581e522b3b862638d2538680a233f57135. 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/ES5271502812.
Si Te la Encuentras por Ahí - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35a0db18fa1d63a2ba93f943659ccde826d41fcd508d4f8077acdc8b3c965d8. 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/ES5270105404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad734909b64e67e4ec1a8916ef11ea547ff7ace09aa5416e7308dcfa35f720aa. 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/ES5271502813.
Una Túnica Morá Con un Cordón de Oro - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdaaa1f102e3a3aadc9e906e55e3b491a5c74ff8745c8312e6b367e7eee8bf1. 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/ES5270105405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c04d6f7209aca0a7622e7e2527756a66668665506744fa5b7d77e7ea34c2759. 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/ES5270105407.
Que Es Lo Mejor de Cartagena - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecff49df33102abd3ffae60270144fe5cafbb4253d2bf46a76596530f05e8550. 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/ES5271502803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6824f7259fe9d0c1de4b517c21f2f5a90298b77ce41e9f8ecd972e7364eddc. 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/ES5270105411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098feaebb389297ec28fdbe679ab06125387b720aca4cae5855af9d38c5bd307. 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/ES5271502805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fc1eb2019690d4d950e0253e8e233d89211b996b397d389a78a7ceb70dd277. 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/ES5271502806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09c3c56439b71ec1c4efe34c4ccc1646afa666333e0d92e6c4041c0f627e6b3. 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/ES5270105408.
Aires de Barbacena: Fandangos Camperos - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a1a90ebd914ff80428639af30c39e017c5f208027504d539bb9806eb500288. 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/ES5271502807.
Aires de Cerro Viento: Fandangos Camperos - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50758dd04e40b699ec193c46f7bc96a9614014be727dd7b47af244ade58acd6f. 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/ES5271502808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173c1bec6e4c00d114f34a645b2106ed79b2355cd14a3b3df1c15b87303ee4e8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES5271502802.
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 0xa46ac1e6b695452566de18b582327af17906e00d3dad5ad45cecbb30e7d5d556. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/ES5270105406.
Los Jilgueros Con Sus Trinos - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3999f9c8c8de9ac52943d3fa830792422290d1c0d7a629d344c9d36a0448fe. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/ES5271502804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ce29cab6ec73de05d3c37b2b8cfe3c125f33e44c795ced7b142fd30471a475. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES5271502809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe608ccd8e3821305a24d08b3b1ff8ad7fa4a9b63258747f0e2459dbbabd03a9b. 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/ES5271502810.
Pepe Aznalcollar, La Época Dorada del Flaménco
100 Mejores Exitos De La Musica - Cantaores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d0617162fa93a6f15c61c38280685299cf865b14769cefe165f216a7fbd84e. 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/ES64A0930343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5967a64a6c83469ec43f4b489221acaf37e380dadff5cf97cacf01bdfa2c4f. 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/ES5530803339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53398ec72a7a14c00681f7d1605cbf600831efe6f23136f66a5d7ea2bb5c2ab2. 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/ES5531226750.