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 0x08d76eba6844c10a866cd5cc83fa0640a30c2addd071ce9d4b015bea54775dd9. 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/1dfba02a-60c0-4bed-9ff9-302fc8aa748e.json and https://artists.proofprofile.net/proofs/artist/1dfba02a-60c0-4bed-9ff9-302fc8aa748e.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 0x969cc8f2dc8f78738519fcb749f7710fe37cd74694ad884269667e667b5b5c67. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:06:20Z), 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/QZK6H2322935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969cc8f2dc8f78738519fcb749f7710fe37cd74694ad884269667e667b5b5c67. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:04:35Z), 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/QZK6H2322935.
Música para la Esperanza con José María Cano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0fd21d7024a4dac86797b62a1d3a908b771281ffac772b199a0f868ed44843. 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/QZTB72280716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066b54ebca1b0b393b7c51f22518762bb3949e18d943185646ac0d9f140c0f92. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTB72280718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11aa20f3c8e26597dfd30fdca26cf502e54b46e67774b23c0ddcb9ca6a4454e8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB72280720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d440fd28f631935a1fa6b5a49cf31996fef37b31626377e850bce592cdf691a. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:11:33Z), 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/QZTB72280715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bd07c6051cbce6a00176f439b8b4f77294966c0efa427c399dd00812d34adc. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZTB72280717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb171f971dc37fb152393785d0f6c1c8d15044fd371469d9ff89ca9271e18ab57. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTB72280719.
50 Aniversario de la bendición Cristo de la Agonía
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9cee724d9521988878a6cf5b898c8c5858b65c465ead2aef154d9b755ad717. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ22337481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0996e2551cb0e265c3caf44eac00a166191e076f2a706f14c3b78d08e6ec89e. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZFZ22337482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8841518216e209687b5eadfc0f11e4947e2346aa50d902506586206d4059cc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFZ22337486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144ac33a08d60de4ea53f1fb3dc2f60d21e19b4589ac48a963bf95c1a3ccc5fe. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:56:39Z), 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/QZFZ22337489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f40ff6692fd162a3be18473acbc973f641783aa35e5aa1e7158b57140c289e2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ22337490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc1c68522110e570d69cae2e40d9b3dab996b6eaf73815c40d97ca386cbc121. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZTB92246399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5004152d98e3d3ffacc40c524374463a4a6cefb9846547efafe6003fca3495e2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES72363961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7f3cc8522ec05523d1f8659bd5c00c66e03250447ee357423852d01e2bd9b6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZHN32382707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7f3cc8522ec05523d1f8659bd5c00c66e03250447ee357423852d01e2bd9b6. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZHN32382707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716de6fafe24cf57e1b4881ae5f6a795f13d6a67b23cbd6562b14621733682e4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN32316438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7e51df0614385ba78047af7a3f8554c9a7e7d1d3656d3cc0a7cf41aca6578e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN52355757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cc6d2e9078ad149311c70d3449d0cf7e7f43a4a714a24e7b60197e067f7ab3. 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/QZHN32346795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe639ee144be8b689955063f86256f28bda5741bda3d3b5904ae9c4360b688165. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZK6F2492326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe639ee144be8b689955063f86256f28bda5741bda3d3b5904ae9c4360b688165. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZK6F2492326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585bee0826254f28853f1252465733c74c2239161abe42c79d374728d3da485f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZES62475914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d7e76345e6d810648e92c854de9c71de77d71408c36d55c624c23b515cd050. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:59:54Z), 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/QZES82470613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a12f3a79826e457b3379bc04a825c7c18d7ac0449ba2e712bdf29c9ebd438e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:41:32Z), 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/QZHN42499830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c3ccf15167b4f637548452be44784b62e09de27acbaed4ea1e5576ade9b48f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHN52443490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f2f89902934ff99c026fb1caf2d7ef8359f8f06ce07eef728bd32a311671cf. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:11:52Z), 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/QZHN62407845.
Todos los caminos llevan a la Esperanza (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb71c369cd74e48167a6b257e52e65314bf4638f93801e0de6025aa42988c8de. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:27:33Z), 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/QZK6G2508416.