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 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 0xa18fba4189da71dd4f058f64222c356f8ea2e9a3483df210c63855f06c9a3d32. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f7726f3-689c-4439-85ca-3c69728291b8.json and https://artists.proofprofile.net/proofs/artist/4f7726f3-689c-4439-85ca-3c69728291b8.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 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 0x865eff479bb733b703b8737d558936e4d9886b1a85920e88e2284054ee491d24. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR9W11507240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185f2f09c1f14c451d9c4d0a6f48bbae94fda05cb56717e65e2e970a314545fc. 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/FR9W11507241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea32dc0ac11035dd00095355ae5d98ac134d0ea38c35487804d11ac2fb73bce. 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/FR9W11507242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2013b5d78f85ebf688d05ee34aac7656dbc75008b0f21e1cd5b1c62776c8a0. 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/FR9W11507243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e47522f886c2bb1645ae4eb48b99c447a87d5bddf34875d588c924243c29823. 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/FR9W11507244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1553d335094ea7bf7e8344ecaaefc7a91d2d00abf8465dab6d71a46bb89a918. 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/FR9W11507245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846fd1c9fe819257c3367ce4b722bce9bf4490c414f61be345e0101fb8764695. 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/FR9W11507246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07e60b9aba3e734366b80ce0c47fca350c57957a1e2b01708d92c1ee65b0f1d. 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/FR9W11507248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53efa3f9537cfd7147b1daee8673b36578468829f75ba3649a1ade97421cc6e6. 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/FR10S1812738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7bdce9207e9ae15d335186827137f42d1129e73a591c15d74898bbc2365aed. 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/FR10S1812739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2488e0e8202afeb49d32b6aa1bf3653b36e47ba3ea6de76b60454a631caf56. 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/FR10S1812742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe780704984bf47946017b6f8526adf5de99769e7f2d079975719bfd28e5bec37. 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/FR10S1812743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6b121c4599ae34073aa5ac6b7a948408ac46547eaca82184cdbe5ff2a1f706. 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/FR10S1812747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64874c22546e02d897c6daff1b15908c1ea8783adae9cac1122a7303fdddc5a5. 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/FR10S1812749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c8e1e79aa1da8f520d3b46b6c95670559681f96875a00243b9b615e964b6c5. 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/FR10S1812753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dbd75b2b264f49ab7509e4607196ecc0b877978e3c5aa9d8908029e0deb467. 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/FRIDO2417207.
ah aͣhͪ aͣhͪhͪhͪhͪ (Club Nowadays, Vol. 4)
ah aͣhͪ aͣhͪhͪhͪhͪ - Club Nowadays, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b247623ae4857fd7b1ed3c975761bbf51da599a0ced8e5d47debaf793e406c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:21:14Z), 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/FR0Z42400570.
junie1 (ou trois musiques pour faire du vélo la nuit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac17f451e990b41d4e4d98d7ff33d043f1382a49336571430c6e641f64a6d8a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9W11503454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cc3e514af9875d69ecc9e410d16be7e62e061234c765c4d3f38766e4f28a6c. 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/FR9W11503179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bea737d8cdbabc8304aa5dad1974d71b8bbbf2da86bf830aeebfd8cd653b3f. 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/FR9W11503182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db4a2b5f703cb1cd592e51dbf7c8a9e6c1c853525c0300b0941885548555b2f. 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/FR9W11502176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624db60099f025f87629be3d37907160a5ed49791228f360581f2746283dae85. 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/FR9W11502177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5942a5485957b9818a16ec1a65efcd3c6b806cf07bb0efb64c734f5529c085. 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/FR9W11502178.
Connection - Reznik & Good Guy Mikesh Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2f0de6422a0b917e40ad9496b4f9f08c08005d7b33460239e2402b8611c9e8. 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/FR91F1900500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc890e55063db8c77f1d32adc5a0fbe5ce38f6c13025e9e40fd80a1d64ddcdde8. 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/FR0Z42400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf714fa3ad06130756bdc879f037f91a0ae0c4d0134a1beefade8593b3f3149d5. 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/FR0Z42400752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b247623ae4857fd7b1ed3c975761bbf51da599a0ced8e5d47debaf793e406c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR0Z42400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca5260ff45429518ed880accc75f6328157db68fb6658cbf6f4c1acfcbe86aa. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR0Z42400580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09d4450def4519520a7c2f83221352317c3112fca5d57dddae3fc8ef114a1b6. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR0Z42400590.