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 0x5a6ee2a62cc9a35061bd0341ef5f2c9522710f76441e16bbb02024ccb2e47c51. 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/f52892bb-13ea-4ff3-8c34-ea641a7833a6.json and https://artists.proofprofile.net/proofs/artist/f52892bb-13ea-4ff3-8c34-ea641a7833a6.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 0xf58ebeafa84d341b294157509fa2ba3c2edd0b16bbd9974e45bac3dff42e73cc. 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/JPTF01618301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33eecd8c6e2684d79f4b6db8cd3f7504bee0b7b33fc826111bbf8cec47709e9b. 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/JPTF01618302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1ed351edbaeb2cbde50917cc8a9f9be980fbc31327f5867167b706582be95a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:28:49Z), 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/JPTF01618303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd3d7593c3aa059d3f1806557c59964be8780eaedb803e548ede91027fde762. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPTF01618305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bd3a0c06f819f04ce5c5cf5e01d3592b170f351da7e21fbea4a405e5ecc860. 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/JPTF01618306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f5035c96802e38b17cd69ddda18ed345af72c7fd1154bc461b0d52c4207aa1. 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/JPU901800926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe594fd897f32a0aff5be308f2ddd2ded5ac89f35b501b4a7fa26d139121047d8. 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/JPU901903599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610ea70104e88f3cad3d900c02aad3b2fefbd84633edf6dc61d14033d6202b34. 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/JPU901901452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571efffcfa30cfccde8d06baa76d30eb449b4e6e91d6597ce3d64b0a258f976a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPU901803311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4868d26225b69c7ad33adf5340eae2269e3ff413edd9d87ae46abb2995da396e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPU901800927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390c9fe2159221b3c3277f58c0243a28bfcb3ddb7f0fe91f38e40715485d3188. 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/JPU901803309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be982dd55c7d596c8839302d18ce50558be40ff0039c078fd6d664389ef3708. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPU901900852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042725616006e78396fd543799a3d4af205320677b7aa600a68b2b6229e8469a. 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/JPU901901002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb651f0040e405b2b6993aad48716950a8473e4999639dd7aa1afea47b0c4def. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/JPU901900854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a22da1cd53fd42d4898428ed20887b1e2a3048cc2fbbfd630a99b182bb01a92. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPU901902607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1801fb49b6c5384d2f7e005885ab16fd5fb32d5971cb67a282ff4df7ff5306c7. 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/JPU901902608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bffc0becbb06212abab9c3112a14f8a3a993aa7a11c1ca7ad3d1e65ab7a01c. 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/JPU902003163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01331aae64ed75efd24655726bc9dd41697292a9b449fae2f4210c8c922373fd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPU902003165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb4aed7109706fcca9a2e74d41296e755220759f00a6fc042ff0d99f8ce4999. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:33:39Z), 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/JPU902003166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c082576044bb31a820497429aea129bfcb233443afbcd2298da775e39d3fcfe. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPU902100561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7cd2b985d148a413bf24008de1c67f89533f92207b65de678d85786be501a1. 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/JPU902001720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30caa2e930b39714d1edd2dbcfd0e9bf43c2e92b434e508575e8ae155dee309. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPU902100562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc955a9813ed0ea1977ffe099660024b362e9e8bc90285846429367aea4f7cb. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPU902100565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edb37b5d77cd7e84a51345542ea091fe5c76c559b61d2dff3674176d74386d3. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/JPU902001056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93372cff0806032c3a44928236ffbcbf0501fef3b642ae29763a861e66dec55d. 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/JPU902301281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe364ba672766f4edd6ee8118fc5bc85f240edabe950c6a8ea1eb8a6f01de56dc. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPU902304490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b692e8fea534810b0bd2818c6cdb1e596e653cfc38b2a1774f28e67b7c63c98. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPU902305104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb91fe721a2e41e045d19acae07e875d81b69bfc934f830fa30965d12805d016. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPU902401423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8798b25819017482746ab4420f16f3e92dee749691b64e4916f7f7c54e2fef31. 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/JPU902401424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42870f7707e74424bbcc17d5b8f8352b6cb19b20c89f0341a8c6e176c2e3b990. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPU902305441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679ad7d6bc8b7c5daa5fc51702631cd9de6ce80cf54af8053f2a1db42bf5ddbc. 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/JPU902401426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b692e8fea534810b0bd2818c6cdb1e596e653cfc38b2a1774f28e67b7c63c98. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPU902305104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9106f50495cabdaaf542f18b8164884669aa1ec3d8014061da85518f6d9ce4cf. 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/JPG102200789.