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 0x6eb2e6a12f00e072aa155285b10703d3af4073eca292d2367dec4f6b3ea9e5ae. 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/9457260c-0d88-435d-8858-65270cdf7e7c.json and https://artists.proofprofile.net/proofs/artist/9457260c-0d88-435d-8858-65270cdf7e7c.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 0x707711a7a6005cb81c66d6451551f0e748f3f12569339a7586f2acd8f452a2cd. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USA3P0400240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6e569a308ec2ecb02714935f2c910e43d132e94f7a8c99f1c150a7359978b4. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USA3P0400476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda73e324570dfa8299d0836fd6f5a35795ac5abedb62aa6c249b50b38e8d45ca. 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/USA3P0400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8890b5aa12375209069c0f63e2927bd8b2d89fb6a3e0a6b89be0112c7a51369d. 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/USA3P0400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37286a0f11dcb8c48f797ce87b90f24d25144f35f10e610e29018f060a8b78c. 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/USA3P0400481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953afeacf93e551f7038d4fa0f36937e7acab018d5e3271e4fd35a62694bef48. 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/USA3P0400482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacca274c46705ebf35d105836633ebfd5a6396dc529c7e241f90a2f18c48ba4. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:27:28Z), 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/USA3P0400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4c3302746aac0a99514a489c1f06359d4017e9e1db7c2aec83578bf301acdd. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/USA3P0400484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4abfde83cd7f21e10960e3982af457d96bcedbb99c0f88164c8113a7e7a1d2e. 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/USA3P0400485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594001bc7c263dedb5e202de8bccda9d1091bef17efd3de077f6f121fa57589f. 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/USA3P0400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284484ce2213b18b88146cf8a0e98e24d6444c9425e8e80191a684bc78b6ff4d. 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/QZZ8A2412462.
Schwanen Live (unreleased 2006) - Knifehandchop remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d50d7f79ec2bafe497e0e7ef75a896aff9b4b13fbae160cf4fedeb5928eaeb. 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/QZZ8A2412499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841f13492dda427eb2933c706f95d2c6626ee8c986a95f95fa602bb88d37e612. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:01:18Z), 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/QZZ8A2412530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444c68b229bb7c3289e7cf7f2d6bf5ace7398157d01fba77b2baabad9446f708. 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/QZZ8A2412548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081d9b291bcbc32be562712bda960e761a8c34b4ef19a03918f49133f1c55117. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:28:54Z), 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/QZZ8A2412552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cf2eb446ce26767dec4caa853f0b16416d785603862e8cd999cb3d27498c0a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZZ8A2414121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5349efe39ae803ed27b9b7a05d2e5c001d729519a13b7873ab35e87fd30a21c8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZ8A2414144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd622283a583ec1f0d799e9d4004d5d422ad05935b1a26ec72cd7ca21118121ef. 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/QZZ8A2414158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58860e0fb282ea22f97fe0c555ceccdd7b5e81d288c7da1d1fb7bab20ef35949. 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/USGGP0712001.