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 0x9509745ec78d542c7c31e63814291e2f001f1a3559e9bead935c6deb37c5a1ba. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52a3a62b-a931-4428-8e14-9ed609db1208.json and https://artists.proofprofile.net/proofs/artist/52a3a62b-a931-4428-8e14-9ed609db1208.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 0xbea5eb8ebd45dbfa8db28044917d9da4253dd9e2eb75d3d72bcddb21b6423f43. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/HRAA41200329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7e574aeb3dcd61dc332a1d01c58d136110a67b927a51a6d711c7a1eb6dc07a. 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/HRAA41200330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fb900861117c2fd709bf8b9314672c2666f7f10f9db642db23b8ac9330e01b. 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/HRAA41200331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97338bdef9e80c85bf98329da99d9899e4c60393b724ad764859a303d7530f78. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/HRAA41200332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0a4b0f49d8e9cce534dd764205dfb189918b99323f321da91aeba2a277f51b. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:46:30Z), 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/HRAA41200333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f1cf7c1022a6caca0138aa55bba5aa88926bbffc04ad1bc05adad5412ae35c. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/HRAA41200334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9140302e9781d064a1c0adc35c34d71ec6fdacc813c89b3153fe7c699b7325. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/HRAA41500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af63fe07622db07ced92fa810e34704f334bda5623a241f50337aeb1f90100d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/HRAA41500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9362d94d4bd9999c5b909a277ad3ba1d4e58ef0c16ec3b19c27569d15b07ddf. 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/HRAA41500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07c05cfb1bb6a49c69604351c4db1b26c8b7b932ac8ba1eb8111513af55e52f. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/HRAA41400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378b92dac97042f7c3d65acecc642d01dee530c1bcef37c848486fda0f1b5208. 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/HRAA41500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee8f2cd3d3846cc9fc11aa80a3d86e429271c0d54645163f0fed4ddf2feb256. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/HRA231600077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16fdbc7cc01e3de0f73dbd14712ab90a85a2a58c4d535a50647c2a6deb4f84e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HRA231700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339a45a9a8cee921cc33b519db7199acf624d65b5f5d88e4b46decb2f1d5b27f. 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/HRA231800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339a45a9a8cee921cc33b519db7199acf624d65b5f5d88e4b46decb2f1d5b27f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/HRA231800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbda88d174b2674369f52be934d75a76155c184f5780c42243d6559e5828304. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/HRA231900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d1f2959b845558806374f6f786581226f22747e8e45c2961b6d7e738f96116. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:03:03Z), 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/HRA231600092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51368da5717c4674bc1b784540b0bd8b0ae2b0f6bf077290983171b916ddc916. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HRA231800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5a05081594fb9f01ff5fdd5731612db55ac2262f6d5068d65b151a17729c43. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/HRA231700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030c09405f585c3840e623b864bbc553158bf77005daf5332a7000d7f2cfa153. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HRA231800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d951290e36f9968fbc23802fbbb53d3208dafce2783a3bfc48e539f7a7ebe7. 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/HRA231900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499b3386e54b17efe62688cfba2c09101fcfda0686b9de002cc2eae2afbefb48. 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/HRA041990763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810b3e0797585b33902c8e97fede690ef029f084086a7dda3c6cc8998b3b7910. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:21Z), 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/HRA231900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d712917247616c345aae48cdf088ffc3b1a3482669ae7669f7f3591c86821c5. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/HRA231800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1abedc643fc06d8d1ffcc40599d2a3ffa108c7cc13b075bca67ef5258018401. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/HRA232000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fb5efd3f731a9ceee0bd0704ec9edaeeafead58c3c61885e809c2056f97fc2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/HRAA42200177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204796e4d96c61815882496cda91b03cd63f37ef7e5e1d4e7d77594c03a9251b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/HRA042300846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcc3eaecb64241137ab39537cce926068341d11e26870da6d75df00ab075f4e. 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/HRA042301145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2179c368270076737281ee8322ad16120f6d6cfc7ecb4e0d918d36e245be1bb3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HRA042391680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a4bf0adb82eb3c7792546974447d3234add5d8edb7b3095cff76ca7747c144. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HRA042400964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffc52ef771e82904f2b3f22619e95e0e3231f19223e14f28b1316ed48e5e632. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GXH2J2545830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a8b58439c442a7ecfe2035af5e320fb413977b0a307cc442c1a3193e3de6c8. 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/HRAA41200328.