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 0xe83e2d83f0a19d6778d1a939800e0f681b54fc2edd9f91441725cb8c4bc75112. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/195b8eba-4ef2-4df2-9772-8ae4afdd25ad.json and https://artists.proofprofile.net/proofs/artist/195b8eba-4ef2-4df2-9772-8ae4afdd25ad.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 0x130f94e1c7667a4d62b8911e0d3c9f05d1efbc030dd0145794b711142db5acd2. 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/TCADG1725320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1f2c03f03991e587691e3d22b0892fab0d27d14f680ee4ada0288003655f28. 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/TCADG1725329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1a2da53f9d77a3287771364ae0260617bc6acc89a29f5587f4e587fadfcdae. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCADG1725333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a144e4e029ccaacf6210f8cd141d3b3d731756b61cefd0e0b1a1838060e9001. 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/TCADG1725334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e1b295495dac39d909fa314b67f7c70824bc9a67bf4d64e33e04c9d1dc2329. 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/TCADG1725336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd0070586b9eabe720513af56c871ad5477a9698e441d21a641c697137578ff. 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/TCADG1725338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b2e0933a099a034636e3897ee47f873d0e220ab13e54b7fcae5dd4f60fd820. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:19Z), 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/TCADG1725339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb597d97297cf07d7650905687fae05f89cf15bf91444f9e7cfe4c356f7a866a4. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/TCADZ1888666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96d61f9dad6f4ef44df3d353aa32c901bc9132e441913915e83d3c20c8edea6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCADZ1888669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf063e40de13ed1085c0a6435d1d24d7718fbbe2accb2987922be514594ff0510. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCADZ1888675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c1d78cd2c3da7700d3f6c8fb83e9eb67ac67a4165fa65d93f54b5f13b635f6. 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/TCADZ1888698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310eae142d437c0e1f0d1bc93ae98912c3a25ebe2d8b76257c947c1a624f4581. 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/TCADZ1888716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475a254353e82fe9715d928a206222ebfff2372bd1ee6fce03126cecce94bd3e. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:27:27Z), 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/TCADZ1888724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c5269eb421f206f0e606da51df720cf7a305d2a932b702aabb301d45c15905. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCADZ1888735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74550d85da40abbdb7a64ae1bad58dc2e7e426d7591055616097fe6560f1a5c5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCADZ1888747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60b259a716607f4fe79033c863ff84237d9f63fbe37ff9705bae0d2e4ae8f52. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TCADZ1888751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8fd47e821a156c2338d29c2d8918023bb079fa0774b5712b90ed9bb6b2846e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:48:15Z), 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/TCAEP2029011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317d09d49937b835ad7f53764707f03e5379be57ec467cf2d73c2de697332908. 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/TCAEP2043754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041586984bcb626fe3b27ac98e668edcfa509dd197efdeb8c177fb609df81f0e. 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/TCAEP2043763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55de8b9573f5db847471a558eb67c3a2437bb93a1914ceb0a18b9b440a8ce631. 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/TCAEP2043786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c0d7b0b1f3253d03c4bc1b043b31f49dd9bc6c4ecf48d819f5c7a8c289e745. 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/TCAEP2043794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6adbb6a27d2ef8ced87272d0d34b9a98f3bc580992eda7c972e690c9e615d02. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAEP2043803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0817413dd53565fc15d2dfb784c198d96ebea79f65ff1dc8f2a559ef0e48c8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:42:53Z), 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/TCAFG2023230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4b3df4475dccead7c9cc17f3fe445dae9a3093757297ab62c84272efbcd996. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:12:01Z), 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/TCAFB2014175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94918d21055ef312e0f68ee7ced873ef320ea03fcb7b86fb32ebf4da1eb5057. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAFE2004269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6c0ecd56b14b6dee1857d0400ffaf088e7ab88a4215354b6e2fde304a2a3a9. 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/TCAFG2023430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4f19fcc3f165e831fe9dd53ba449b4139fb5746fbed655272fb2d331a59a0b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAFG2023148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5053c3376470b83edb20b6fca78884816f7cf5ee5c0548d6e37a50c81a4894. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAFX2118713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cfcb9671e8a823e3f99438502f5bb63adeb22d6ed38eff922582615a504541. 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/TCAFY2110204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69645a973b29c8d97937e49f08d255717ea25fa21a18ab28fba556be069b6128. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAGD2272119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd0a11bd9d5b83e5f29b4d8b79f5e508a77352ec246a5860dfe64de6926e3db. 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/TCAGD2272157.