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 0x4c199da8457855805dae0a0aa74232ac5123a79b71fbd3a431c64c2890e8e3a4. 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/239bf15e-7d0d-404d-aefa-3c761672f1b9.json and https://artists.proofprofile.net/proofs/artist/239bf15e-7d0d-404d-aefa-3c761672f1b9.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 0x4570323cbdf9234318da63f9507bb0d142f9956e2e00de7de657b6428fec0652. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:06:42Z), 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/QZZ972445702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bcccd1aebde1f84854ae6b77a2246fda476b568f5d31122a9596e2ea4df271. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZ972445704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a94be52f2ba98aae053a332d3922e1ef39628709cd2906a3a228b1f3c03fad. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZZ972445705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffc9adadedbae39d84c18ad0c0bc85db07f36e63c040e31e9b846ae7d222b0f. 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/QZZ972445410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dc84bf439e21592bdb0480c1d94c5ddcd847d5a0439bdb8242a0431c68adfd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ972445416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924a8b57de014f84946e8b8ff63ab13bc3db3830413321c7da52b1e40032c64b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ972445691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcaf99c13b23b43ab919a5925d9f80a061986df696a5be703769f2d11a0158e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ972445695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa269af223a95288514e702eca2819a8a6aa86f5e8aaa667fe558e6ca827fe517. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZZ972447262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db513d723f373de37f145694c5a2d30672a4ca0dd4593b1488272fddc6a9d64. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZXLZ2502833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffbd9e78038472f2468374950184642ef83a85c19fd30931e7c48820bdd026c. 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/QM6DC1721509.
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Vuelven Con Mas Rancheras Corridos Picudos Vol. 6
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f956c71a681f50aef648b8265260bed182a0990b774fa4b798601f75b3eff9. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:02:41Z), 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/QM6DC1721972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e54158653e2fb3aafb0b35866a4c707c51f90103b7305c6ca4cf91cc0e10c2. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM6DC1725303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c08f219a80a075c1caef055b3a10c44fbcdb66d318f23e86d34c5bed5ec53a1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM6DC1725305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcf1804248353d2d0f21bb5c3c7d3e3c1ad6e0fa138ab41f605eead1928976f. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QM6DC1725447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc8e808343d165faf1fdf7a2378db872ea1cd97d330b5a51bd40233db228586. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:50:35Z), 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/QM6DC1725451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3aad0479c8c11d77ab4bdbb29dbb7d5acb3ab1cf57e3ff67464c692c7a707c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:10Z), 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/QM6DC1725507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66df14cfbf4e912e040c72fff8f4a53e4c7edeeb431e0435894764817089d680. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:01:38Z), 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/QM6DC1725513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec3a11735a4c87197415ae95d8097886e1638a1a6702916544212adcb0fa334. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QM6DC1725514.