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 0xae580da7a8a7e1319c00a4b21f7efdc1cfb973748fca4e972d9b3b2e06ace1c1. 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/0a588899-6b66-46cc-9faf-0b8845f2f795.json and https://artists.proofprofile.net/proofs/artist/0a588899-6b66-46cc-9faf-0b8845f2f795.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Partir De Hoy (24 Grandes De Cielo Azul)
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 0x7f9ef189b5cc181e7a6405378fcea86377d89dbaabe31f6557abfb37bc7def62. 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/USDY41575527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9dd497b9387da4405ffe307cd7a4e21d6e88e8725c4495b8158c2a1c7b9af5. 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/USDY41575531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c535d7fb08a503fffa5addc784d0e89e01d37179885573a49454cacc87b764. 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/USWL18700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a95ebac8802874525e7fa1e10305400956a5ddbcb9af8ea9249b85e60dec563. 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/USWL19000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4224dd8cb64c9120c2d650abcd45f8d81b5a56ec708b48018965e95037eb78c1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWL19000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9704aa0e124c7d2fcc5e9448b330a2a6f856e0b1d5da6828ffb13a6924a7db83. 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/USWL18700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710d54216c3fc531a5bade6529b3b96bd39067a5078ece93d1536997c890c6f4. 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/USWL18900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47a04a83c77ad7adaceb9cf47d9de82a33e6ca25dbe41d636329a95b6c32ec8. 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/USWL19000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5853fe3ad9bacc0bcf7fbe76ed582d502e2ade468e8bd414e27ddee2f55acc41. 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/USWL19000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5611995a2ecb05e804a9dfdf3574c3a4efea3d8ec6d4528b21dd9cde21d1634. 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/USWL18900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ead5c90828ef8741b2eb441ace2ca91683412a9436f72fcf8d0da2b81f1b45. 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/USWL19000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf03710aff6fe12ef77c3a358936b57830b584c81c2f00e4429265b98788054e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNFJ2500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077481af7193440c3c15761fa538b2b0147a0d76bd3b41922996e9048dd07188. 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/QZNFJ2500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a65aeaa2f0ebd5548e1604237e6f8f37d98d7d874562d2223405c47d66b7a8d. 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/QZNFJ2500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa14b627e85d7cc5a38e1fc0100f0ca9a1a698b22956ba175735dc8fb9e05916. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNFJ2500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4d2d4fe6ff7cb46fe58bf58ff2cb36879ea9832da45f8f62b59744ffefe8f6. 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/QZNFJ2500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5d3ad5289eee48ef68a7d0c9141ced4a63e6f9c48dd65a58386b6ba3a9bcb5. 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/QZNFJ2500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5301a2a34ec7d7d0552807111e1168367f1d8c1136428f7b4310a1eada23c89. 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/QM6DC1328848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2155ecef46321b981d80b527fd82aa6d0b31f62a6192b0f75944fda9171b7d5. 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/QM6DC1328850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7328d16cab87ca84e1e65c0ace99b6a96daf781d5c56f610b33824f0a2debaf5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6DC1328851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6133a44aba943c85596d5736355eed1e62abcbea73b6cf22a5c5fab0f78a7c7f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6DC1328853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8501b32016b4165097a8f2e7c8d1c7c9f4955d213e84e86b08556104d5a8331e. 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/QM6DC1328860.