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 0xdddfc6d5767872d7ae8b389b06d03277cd7b1ab600fa582643a799114baebc8e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc636e30-cfaa-4abd-bb35-3bd96ceaf182.json and https://artists.proofprofile.net/proofs/artist/cc636e30-cfaa-4abd-bb35-3bd96ceaf182.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piratas Legendarios - 2023 Remasterizado
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 0x8a16df52446004a23331b95ec436a4715b118d31ba4bafdbf3a9f1cc8b098451. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZW9L2386352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b169e2db244e314d90a5d6e45605a5d37a73e41057ce0ad88263d5a5e8adc8. 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/QZW9L2386348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0833191b18707d6149be05e3bca94d44e5a358906874d65bd2c044582fa56db3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZW9L2386347.
La Isla de la Maldición - 2023 Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa3f2816a90e7ba8ca084d8c0354d1703a1fd0051dd1ce39cb6ed8bc433368e. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZW9L2386351.
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 0x70ab92a84e16c74e73e782330af5c8c035c6200e4c2db3c413463e336f666217. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZW9L2386350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f250d725499fd6a6641e93233d196a7a51efc787d3ebb84a413cf28e7691e27. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZW9L2386349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0410540d4e7386850d50f52eb0ff1236d414eb29536ea6fede97f2e4657f063. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZW9L2386346.
El Holandés Errante - 2023 Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3526d09f41a9774aa42d9d0866be0117fd3b672fed8088d5e8b4a87173bda13b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZW9L2386344.
La Taberna de la Bruja - 2023 Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f980a64d125f84249f279d3ccab82fb3342624cfb1c64078c888dc3d7f8cf2. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZW9L2386353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae0f130a1632469e00272c70913157daf51a4f6240c40592e9651c6ecf60f82. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGLS1951152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf75a57f71fa2945fd3e599ebca363439885429e162ae7f3b610fb98b4de11fd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLS1951153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0b461441205bbc6daf50a213f038f0a092b09281e445d8b4f4edb5db87bf7c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGLS1951158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997de671eb859e37cab829107cd15446c887099f7580eb61d66a0847c0fc2488. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZGLS1951154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cb041e37ca9a2f975d5e53283002cb52fc1457a6123940c0ab856dbad2d0c5. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZGLS1951155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70189959c62596e9a6fc29500a5fe9ba76d06f7c9a1a11bb3f5109212211f6e0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US7VG1695725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc461df12ddc7b3b6ad211911da0538f4b269772a4699c059b71e750aefc93953. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG1695729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8ea95192056613426001718d7f6a0572fae64586b4e206499981f6be9c1a40. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/US7VG1695726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfe0d2001166660559549484558ff2dfe7f6a2a285685574803a82524c0b6c8. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/US7VG1695727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c789cb31ec4a36b4ea6c20cd57fe1ea09064eff92f440c8b318a726ab66699. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/US7VG1695728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45171a593c2944177cd4ced24dba9b083fda19d6af7025ecf11355a0a2e37544. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/US7VG1695730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8121550c2ef13894753f57e759a6c965db81026a3c38d33af3e220d42fbf5c. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/US7VG1695733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f8ea0b14aaf5c51af3a49c8f79d83e2b7f6269e447eb8497c0d1be673eb928. 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/QZW9K2350279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6142fd7091b53a3d3a3254f014a1c125c4d7c8f78403ecbad21e202b406822e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZW9K2350282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a76ea2924c18ecce0342d4dd1e4f39df6eb8f06bccdea8c8e0a343c44f35eab. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZW9K2350280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4d9c57a2f0e1731aaf139513d15944d5f70174490f7a7ccfff046c5c5faf89. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTVM2353584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90d1de7b574d56b54db5376617a8ac0df5948c69381bc02c6fd79611175e25b. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-21T23:39:36Z), 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/QZ5AB1982106.