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 0x31119101970133218e10e9164e57125bf7966e31f67177a6f014a362e173e3eb. 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/cbcfdbcc-fd72-45fe-bdb8-d962efa39bb5.json and https://artists.proofprofile.net/proofs/artist/cbcfdbcc-fd72-45fe-bdb8-d962efa39bb5.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 0xf5e589df227f1a9870e2d610a201745173f06f5af2197a70ee8e298dd80470c4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USCGH2010768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ec88fe1b35c70ddad886bbc06d814929b3dd4c899d08c12d61245a99bbf66b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USCGH2010769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0d4db9a22f372db6e60ce70114d197e6a5d4a33a774e7f5760cb956e9e19a1. 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/USCGH2010770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7205f4ced250ab38e48b548dc0eec8b3b50cd6a5e16bdcfa78af2722bb62c4bb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGH2010771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9035e1197435b5c5ce3af5aef8a52ac84d95c489f54e373633c654273867bb60. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGH2010772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac9c5d06d887fde1c805de9cbe745ebd37f68fb0a8264c117788217aefc4086. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USCGH2010773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7b1e912669843c4a1578d3ef158fc18028e3310726dfc318a1d76743cac47a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGH2010774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3d241b7e1c94ae5abcf877c12d2bf716d5e5d39a6bef340dbd0ed6d464467a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGH2010775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcbd7d0e20d3c52b39178bdec800fdb111124cb5834eb6bad45792ac2e8132b. 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/QZWFG2435091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbe3d725b23dc7e1f636f5ce26d4d9cd713766f4067efff262f374f9e07c407. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTBF2461453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf7c7601b31965cfa0424f3f3450536ce56b6cb8693fd124a5a5593ef74d213. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6P2448447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc228a9a7ae6fb6932ce111e34ee96b7a6a62adc2c7a61a41bf4c7ab4f84eee5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZDA72421667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46fd64041c8356e72a68bf23ffdcd099e482c657188308cbc65c131ebcc0cd5. 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/QZWFP2367385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9799b75b597dc156ab0f58dcc29efa09201bf6773ba8e067f7144e4e622fb74e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAY2356868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cc037601e852e926aa93d5aca045d9858a2157979cf6408dd97830377578ba. 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/QZHN42331272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcfdadcad6474b422d414b6f9a91802c6306e3b0788408db295a64a1d60cef3. 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/QZHN42331273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6d51999767b9247a7630f41f834e3041253465798a0c15e00004b67cd2a0ef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN42331274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921e9a22f7e71d89ecf04a949302aaa7771699f371cadcbd728c1277612858b1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN42331275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a7b68eb1095b7e1a68d2992b34f8000954f362d613d0a462e13d2cceb99186. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEQ2240753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40231c5e8877909932ab73fce2bbb8c9563bb0e7954691d10a41e5f4ffa72472. 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/QZMEQ2240754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2565053d401bb4a6b22835f50bf4b5a7712431d916ce2a20b17c4f294dccd668. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZMEQ2240755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adf23b1e2b6d04c5aa75f53a3ad329858bedd0fb93eeae6e0717ebf7486f544. 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/QZMEQ2240756.