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 0xb51bf917319fbf3ee01aa4b6ea98f92accbb2d7becf817fa24c89da9e1114113. 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/87d11562-75d3-455e-afc8-ff3acc2a2e86.json and https://artists.proofprofile.net/proofs/artist/87d11562-75d3-455e-afc8-ff3acc2a2e86.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 0xbd155b4567873e9293df09b5d2c648d35e2e04fb37559c4a39f8ebce675739aa. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:31:51Z), 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/QMDA72230396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f6941ae9ee563a82b3ce16c21748645b66727a02331ec7375110d7f5fa07ca. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZ7R41751338.
Chispeante Sensacional Los Blancos En Acción, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75aa96ba9ca0f652c24ae46e74b80fc9982a4099d4f03540361cd1e9fdc464ab. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/ES71G2310365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67a88fb67429e57a7b7a884dc8811d945ad58455abebd1671b38e61330d5d5a. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/ES71G2310364.
Chispeante Sensacional: Los Blanco En Acción, Vol. 2
Chispeante Sensacional Los Blancos En Acción, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db03678301186028a757cd0c5450eefcb99e45c519b0eb7c1a54df88597deda. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USZZR0912208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35555b656fabf949b94261150d81327978c067ec7e55c85049e3fcb6b3436a99. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USZZR0912211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6758e60c8e02ea6d1c4fbd6202ea67f0d6fbdc9c8ae62b2e16a93c73401718bd. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:39:24Z), 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/USZZR0912214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac8102917528d397f7b1a6cb282b744bc1a3449b493b38efcb4b902b6c67314. 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/USZZR0912216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a88f301ea201c4f90a7bd997095b11639a6524c5b8ba056632fbafe98809487. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USZZR0912217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e30dd100ba183a88d73f3991be85d335b140eb73710ad1219585e65dbe1e167. 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/USZZR0912218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ca3c287d9107bbe82663b91602d7610e783a7a0eadbf0caf56c3b1686fbcc9. 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/USZZR0912219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc24bd0fa148cb57fa14472a41905e5482dcea3188f6f141f5493c0d53ee04c. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USZZR0912220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35cf28c3b8e84834e8cf6b68afbdea306d55c3262b5412a05e8de4c6126e93e. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/USZZR0912221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be254c74ba88dce5fb902bd9d66fa595cddd7b204f29a6551d6e3b408eca2a3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USZZR0912223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5549220fde7c72b9ac5013fe05dae1cc15a4a0f6474ec9369e0a4bac9e9255ca. 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/USV351446031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5bf1914da68cb73f578578713251299245fd92f49de5463032117bc168e2fc. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USV351446032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c5be483979da6d9de3b37b3c6f5c10817aa57e9d6520fd7f0d57536b1c82b8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USV351446033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e4fd4fd6c53fcd89cd6d9030e87816997f09091f2a1df64c7a7638d43a3717. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USV351446034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538b800e99a38e4b7b4d57c18a7d3f522978ab0af5fd752612a327b1d772f78e. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USV351446042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaabc7aff14abb565768851451d552fbf6516e001afe28f3eeca725cfc53d9e3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:41Z), 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/USJE61611050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd689743ca62cdcb22729ea9c2809573ec9f478a1c66d9b42874629ac22ec9973. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:03:39Z), 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/USJE61611052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885edafa2f33a4f0bea9232ee1ac724d702d725e3e4a0faf5af410d60a6b7ce3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USJE61611053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81ee8a942b7184e1c9a502a5b6a5293b7dba23833ca738b044b82bf01ecf5dd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:10Z), 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/USJE61611054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ac24398d1e6fb8b5f5133baf04191d4d0ed4ae58f5ddf422a09ebae4d34972. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USJE61611059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0311fdaf4bfa2312581ade86412e5d2355452893c6799f172b69f5c936e9f3ef. 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/USJE61611064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677096c7ad98b62176307ac3456008b5b343036def97d9207cb069180a3b6e45. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZHZ31971851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa6910d81db4f0697bd4626041753dfe751969d0f04c14ce706d163d9a1d858. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AEA0D1946800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75548e961045651a15a42d03bc7fecf658cbdc8704ce1d20448a2ac96e290bb2. 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/QMFMF1543208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a1c5086f203c91155d53d5f38ce4d05427797def10a512a65bb9c98c93c60d. 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/QMFMF1543209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb829f196424b814e0f5bfba52ad219747a958e62bc6b30e16585988e9369620d. 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/QMFMF1543210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922da87d9e600e6adbd6c83e5d7fedb8143412741d0c4121a79c1a26dfebf9f1. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QMFMF1543211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffd2296fb064f35b3f0ef46d8e61776b28cb2a106b59277a0cec4c25e23d73f. 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/QMFMF1543212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c8f21ad88f904749d96360eeb1b7b65210a529ac0becdc09011231d3b011af. 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/QMFMF1543213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8055ea305d0486b2778cc4737b8fcf7cff01ddd678b5528770cec75d5e1ffdd. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QMFMF1543214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159316e341ebfd14eefc27ca9b3cba108c14d5ec8af3d539f216ee25d696feab. 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/QMFMF1543215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3ccc85fb15dd3a6d0d24fdd12a5da780dd1f4444e0b097eeb0c5f455768cd7. 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/QMFMF1543217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2ed2e4c8ddd1912c495e68ef6a4947617651c14918ee03baccd0c4dd021208. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:05:58Z), 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/USL4R2217144.
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 0x5e1540e0e4c251a70d00163812634c5da92f89d1699bc2555c7a8d0228339895. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMFMF1543216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756e18c3e8fbb30d44e00d67966cd75f4749aea40cd17f848d6972a8483b6d57. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USL4R2217134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb53f9329c395073f6b33b2cc9130aed29a68e8a60602190c2ae0f759ac7bc04. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USL4R2217142.