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 0x5aa8838ea1ddca64bda5e2e584bbb6a3c9d8a659982390195010df12d0f2ae6c. 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/f7cf9d8c-1ae4-430a-8e78-9066ed622cd9.json and https://artists.proofprofile.net/proofs/artist/f7cf9d8c-1ae4-430a-8e78-9066ed622cd9.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 0x4adf6c009616fa488ee845376ec0497725fe808e987738921f38677eab0943f1. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/US7VG1780467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa204a2bb2f33e9b56f191a7d777dbe84c445a6cc98d40ea10041f13c3921302f. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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/QZ5AB1808145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90b84180547b178fbef5d86870bec60097775cc9e4869edd40ec2b625026df5. 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/QZ5AB1832530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b058cc77967c1754af9f07323bc216fb3c76744d4f4db263016a1449cc0efd8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZ5AB2070593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f5badcc2a25c447f21a802bc0619b859b0bc33c894f5f19bed35a6a4c591a3. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:28:42Z), 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/QZ5AB2070596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d60f0c6d200e3da75bdc3a5dca26af0416ee31009b4d57ff4903a1f6758a1f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZ5AB2070597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2d6f0f4ca0852760ea05bd3c1dd719c61fe623a03ed1bcaf097b013e3d0f36. 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/QZGLS1975272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a620d51113caab48adc936e429281d7b238e604b3346f9089c2c864dea78f23. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZGLS1975274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2e3c71c09f097d77a320754fd472519530863f9aadb39b66094cd9ae9c8c46. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZGLS1975275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c8e4bc3737a7a547722527d360b9c6611b24d740fa2ea03b2c790bcf70dea9. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZHZ51953252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb754a164fde4f8390ccb7ecdd8b0bfb9232a35e76b47ff72b2e94f850f12ae4. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QMDA72414794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf93100b4495b10ad462f638e27fb587ba420ab95716af46f31665cb6140662. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:01:13Z), 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/QMDA72421741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22256979859f044a74c9ffb79de23f5f33475a8ff68555d04dda32f4d62a6a0. 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/QMDA72454914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61db3186c6474efe27afaab6754f8e2d0569f0f4316de45501055dc67f53f42c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QMDA72486751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf93100b4495b10ad462f638e27fb587ba420ab95716af46f31665cb6140662. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:08:40Z), 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/QMDA72421741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1045794a335fae88d58a63e9a9c7509f7b0c3324c664b2b0300b02a8c7261764. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QMDA72425674.
Eres Todo Lo Que Está Bien y Yo Todo Lo Que Está Mal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57538a2aef14ae1fc55563abfe6a1cd8cf38ef31b944aaffe32d4fb6bab9d992. 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/QMDA72482949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea874fdecb9a237263bda05fd7e0948914d3ea973236464c2c1498857cfa98f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:04:48Z), 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/QZMZ92344368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e4f0130bab0b7b902712eda338d97bd26895ad61f2beeacbbe0116d4722d0e. 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/QMDA72483512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb754a164fde4f8390ccb7ecdd8b0bfb9232a35e76b47ff72b2e94f850f12ae4. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QMDA72414794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b487b6857c73177b334c2f0d834ae2b1f4bf83fdf6319cc2e00832568a31c2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QMDA72486296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9451512f221f66d196c926932e8a54c39b848f306fbe07354b04d49f09580235. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92101185.