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 0xed5920ecfc071dc1e8e0cb6962e5de97c8cd3fbc0322c9ff4d04af889801e648. 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/044a2a82-c2d8-4440-8672-292ac05a6b87.json and https://artists.proofprofile.net/proofs/artist/044a2a82-c2d8-4440-8672-292ac05a6b87.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 0xe7d17bf67ed41a7845636a50a2585993dc56f5fabc9ba09ca00b339bf2473852. 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/ZA4ZG1800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9723c1deda5d02257ad6e5b7b285e279dbda023b1f193d19e4bfa15850a680ac. 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/ZA4ZG1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5004781c3de906e250696637612e5c81cd378cf73c2187d76210cbb35a29ac. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:02:57Z), 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/ZA4ZG2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbeabb910fce4a4f8cda12807caa3a18ca066b6f7ba86d48e97567cfbc26fea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX3HH2321409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561556e20e2575c13172187da22c019c0e45ffef9232285d66cd44b964bbb2ad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX3HH2317968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5677c5fafc856ef2a91d617e40508d389f6f82210a4e31007ea79b0b798b499. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX3HH2357956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152f16f616830f22728f1ce082ee62773782e8becf4f89089e70593ec88b75d6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GX3HH2377887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaccbbd2fee9cd9182e864da5bba15a29d517db56b0da76131e274a55cbcae49. 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/GX3HH2393760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac892056cab4226f55351fed562894bcb2b12780fb13cf98c94db989084af24. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GX3HH2333015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69f3acef91fdf9c58bde83a6a576ed4671b1d858f43cb89e0223084d7aa9321. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GX3HH2349851.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8610c674fbf1d7cc7ddaae853bc9449292242fe27a736b3eb0fce5e7fc52e30. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GX3HH2388812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1872fe98caa9dea7467095ff90571db8af727eebed6bca28dff8e743131771c8. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GX3HH2389957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f892fbff2c43ae9c9546d60c8e5cd77848af9d180788f4251b48cf4e9f0658. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/ZA9QL2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b7ba7549fcdff666d191484c9129798bcdfdb2d604ffeb990884fdaf7440d3. 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/ZA9QL2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bc87a5d73d0009eef51fa7994424c966cacd27c5cf4652c8c32ee57f13e90a. 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/ZA9QL2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed23b56bbe21771e50c8232286b766bd5336eac8349015cf9347388ab0bac93. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:08:41Z), 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/ZA9QL2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9618ad2518e73aa0dc90b3b9b357e8a53493d7e016140fa05f1650652f850a1c. 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/ZA4ZG2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc528f1adc66475bc46c2ffce1c671eceb8758e467c599e83fcf65f8509be5eb9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZA4ZG2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6a33c23f208dae03e8101e3c13c609eebc449767495c65405a130d82db6d06. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA4ZG2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520d01e39573eb0c8b3de420dca7813fc5b32403194679cdf888613b20d8ded3. 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/ZA4ZG2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae78a0c0087c09cae7f0c177a735e1f0786a57285b47217679c8b40523fd868. 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/ZA4ZG2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe0721048fc17759ef7bf82d454d00870eef69455eca2f2c939068278f3e1e5. 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/ZA4ZG2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed43024075899fea6374a59f93f909b9a94a49b12ac599888f1e3acb8b75a74. 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/GXHND2544403.
Khon' Ingxaki (feat. Dee Koala, General C'mamane, King Lee, ZVRI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaec92f17ffea2b20618f6bd2977d9d0e22e975e19776dfda33d5068a5b2a5ab. 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/ZBWNK2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9add1d05fb6f54304824892889ff3d98dd20f6bd28c24a99dc9954b1066d8b78. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZBTSH2300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0457c76f2e5e2d1502f6e339bab7eee9e4187416d914ff84f2e6399e2a414c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAQ652400729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b540c930f8794f1a69db3fb23e9dbc223555580d154606e5fd27635340d748. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBMA22307586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed835a1eb16a63b0bba86684a74e55e193dbc8bd1d5298ba08b632442bba13e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBMA22470778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f5751a4071f83ba1c50cd070e300584fca51e5fb098b0c47968f164a993d12. 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/QZK6K2455814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa919269efd71425bb129140d816da7aca71cf0551bc0eb4e85f154ac8e9028f5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZK6K2455815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5e967011d0e6d832224740403b153e0c5009e5b1132741ecdc6e5a06584799. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ZBTSH2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e94b58bb3dd12a1e87b83539f1a1d1f951cd102ef1027d9994be9d98710acf. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/UKXN22304271.