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 0x6c7cd6afb88f70b9792c6c1fda74cccafb683f48545d79feb86b3fefe881cd6d. 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/93809daf-db88-485b-8ed9-7bb80fd01b34.json and https://artists.proofprofile.net/proofs/artist/93809daf-db88-485b-8ed9-7bb80fd01b34.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 0x255a55ddca3c2db08e90ce7f46fb05f4a728f705a6b068224a6e995d8d4810b9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6M2527246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ca72937f7d6d6babacfca91b0f1d7d755eea16138c9543162fedb5d59a1f7d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6M2527247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4450a78c8064bf4918c15ec47976c0d4d6a3a061f38ab47290b75482c4ea7cd9. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:23:00Z), 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/QZK6M2527248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff8d05ac687c1b3dc72ccd3a355e08481ecaba4783a7c9124da351300b094cf. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZK6M2527249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5059be3ef200b71bc9464562aea06037fce92ab9947118b69f70500613189d99. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZK6M2527250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4248c992dd824fb17f37ffbb57b6fc07a3edbeb66f7c2b4501d6d5b869a1e816. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:25Z), 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/QZK6M2527251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85360bcd8028a6f54cf3eca531743a4f5dadd8c945381b9a812f3aba29fbe4b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:07Z), 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/QZK6M2527252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8814a5a52b53ff0edfd47ab107af08738d8c19d1d4da873de3e31180aa06df. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:07:20Z), 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/QZK6M2527254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f48772ab7b6021a6ffc43e390e39a246377f78ac8b29a055125371fc93a133c. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZK6M2527255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921bde295f08e69064fc381eab85d260f9a920f14abf61f47f96591a2af93f59. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZK6M2527256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044d89aae9149d09ad137c7564349d11b156a080a093e489c0e2227ee3735c2a. 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/QZK6M2527257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091c48ead1704a7ff884b92b901684ddb9aa410f0b0e8686172457a731b40fd8. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZK6M2527258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a455aa11cfc3d78146b19442e042928fc7343965cd1d4e92689180fb9210e8. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:46Z), 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/QZK6M2527259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3934281a2f94193947ca11d3b7856932b9e26e73a1598022426c6dea89c5849d. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZK6M2527260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1498b77bc870e8979d8ea6487ed15ae8b9e628e906c77eb4ea77bcba1c17b0f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:36Z), 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/QZK6M2527261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1e3fefc250b1ee1f31000072b2b610d3c264a6d88050afac862b5e5c5865db. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:15:50Z), 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/QZK6M2527262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8991d881ea07efe0c5a93f23948401c0a4c8b9c149f6b5dea849586d1a8a35f. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZK6M2527263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981e6b25f15c84c1941496685b215acd93607774f8a6f96444a71d054ac84241. 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/QZK6M2527264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c67e15b88f068f1df4b726f8a12c059ade2c1bbc65ecfbb9f795a9b3bc1a00a. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZK6M2527265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ebb0ac1af6bbd8f233e588ad07f319a7088d987ef24a7df980ee27d2b26052. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6L2561344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4395fd5e7d2b26474a155479ffd0a8f5b6168aa6d43ef3714437da04a571562b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6L2561345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af1017dc4f434aa09df16d2c24ae7087d457ad77418f1995895a1d567beecda. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZK6L2561346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dd5861ea68b967406ff167b4313aabff9c77d708019e6195534b8fcd1600a6. 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/QZK6L2561347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177114622c207037d95bd766ab24a88da97ed74a42daa7dee7945d0bc1781ec0. 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/QZK6L2561348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7461d0336d34cad7ab0e1d54cade058ea037459f0fe8867d30199eac425766cd. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6L2561349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c7fc71b9f2c4ad62b84dbaf51e5087ab537b48e8e65b61e6463f86d57df8ab. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:08:33Z), 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/QZK6L2561350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135d1232c4b5bfe85edb5b3c223b21630d5cba15408ea20ee2cd7f725a0f1951. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6L2561351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7101913088b217de462bd95effcd0b64e97e9d3eca605566d197db02a7dd8a56. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZK6L2561352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a321a29329ae8221aa6b6ec581b9c87deaaf3c63fd366c2ed87fe291ac2b10. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZK6L2561353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4adce68ecb941c87020333eee45293800540b8b40373c82a9b55dba7b2107f. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZK6L2561354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc19d7de0731f4ccb0dc1430441451ba983b24615e193f4262b351e36493dd72. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZK6L2561355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99fb3f7d13d115f374341b721b060a2d11bd2eab568fbdb8574eca60b162b92. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZK6L2561356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40608f89ca61c506a0d3af3159e432b170e01f3a5121a79dd440205c878df74. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZK6L2561357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5387a2d14cfebc0abffb0ebb2cf0d409742d6db83cc1b7c0763f3f7e2674bc. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:09:45Z), 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/QZK6L2561358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5935c2609484b619484491bbb8add316fecb427da83a1d38914b5389f0b8ccdf. 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/QZK6L2561359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58260d76eb49773a65ce487cd97d129bcf056b41b5ccdd6af34b885c19a35ee. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:53Z), 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/QZK6L2561360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78d0d1c2e93eecd0790415a67932e9e66073aba9a35f0909321af58bdd37633. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:46:08Z), 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/QZK6L2561361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37d724d5461e638d5dde63e8a7d32cf2410221e8d67d668381c2a2c4c3e5efd. 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/QZK6L2561362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf7654758d31ea8c66ad73e27f26f19c7b83fc0d27cf79d5f1e0fe6708bb80a. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZK6L2561363.