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 0xc24f2a341a0680834c7bf58dddab7a2486ab5c99af5e70e7a3032f71e3536644. 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/bfdf1c03-6bc5-4655-b159-b98e443c8b8f.json and https://artists.proofprofile.net/proofs/artist/bfdf1c03-6bc5-4655-b159-b98e443c8b8f.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 0xb2b46fdefdc8091db6cc664caf11bec26d018776be3fe296662353bd885e9823. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/BR5JW2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765252d98b7082124f97c2a0ceb2e5786067dff0bb2e0327fa4531c85753e834. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:40:40Z), 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/BR5JW2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ea2f33847b005815bea05b248cbc6a361aea201df08afb537dc1c88aef1982. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:50:11Z), 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/BR5JW2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d046f4c153fe12ea7e686ac352df764ecaeac0395ac0a9dbacbfad18fbe74e1. 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/BR5JW2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4e3108e1f2e93c97b67f2c097132533e341d55c6d0b1edd8e6a2cc5e685e66. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:06:12Z), 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/BR5JW2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea21ceaad88580b31edfad4bdde6bf157504b0cb598eaa207dc7f1a3c397b9d3. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/BR5JW2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6f24e4d4d76bfc7fb9a7a9770dd7cb2660f158713dc498ec190544f8ee0818. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BR5JW2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a54017c0f0a4ea15d6c5e2b808e6975ce25347a481939f14bd7c5e2879469fa. 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/BR5JW2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce58f157c9b8af58ee405987de544500cfc04ca619bfeb47a48e1d71fe1008ca. 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/BR5JW2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc250b94f85b35d92e919a297660e2577b0123b2db1a86d2bb7fc0d5f2bac0cf9. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/BR5JW2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1020af0a12527174bb7ab06207a32ea175c7a330db14c0e3c154ddfe8093902. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/BR5JW2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf535f9fb699e55e5fcc2fef181a03433e3a9ebaa23f7a9966083826382cacf0d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BR5JW2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fe9948e6292bcda6a585506dc2b09e8d285e1f42b16c81f6c155b59813e82b. 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/BR5JW2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e910168fc7e7645559e880822c6ff901fff6085ade7df36630c6286529484e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:04:13Z), 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/BR5JW2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c30b7ffeadd88dc2af407d73ca52a5937508ffff6d202e02cec0eb70998d512. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:52:50Z), 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/BR5JW2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd813625b7ecff887f1c2a69f08135768353a4195bcbfe9ed212d38007a2e309. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/BR5JW2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fadeb1a2891e1543e446141ea7e6330b23c80c8ce352772fbeb8c4d7710cf9b. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BR5JW2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590e5fe07b1a16f5cc6602fb54884a02b69ae2a057e185ef181b9ea67f112e19. 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/BR5JW2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc2165f1b851ef8a5f66a8300b4966113296a61ab899a4868b31f0b4a5962fa. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/BR5JW2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80944ae7dbf8a7097388dfae72ca4f985b1c1423dfdb374563dd8a16a6b14f08. 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/BR5JW2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dde6e405c25272d923e14c50268617f56e5e71a640b5048a11ffccf4975c3ad. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BR5JW2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea2ce2d2d01c55c045942b073a96e274a2262a39a97484228d3cb6b1855adc1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:03:53Z), 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/BR5JW2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fae4b57e94da23e833439c240f714295cdc8dab7815f24959a3e7ab49357915. 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/BR5JW2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfb0631f20edc4210bca2afbf31d642a3bbfd1024f64b0b915f26599908a1c8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:01:33Z), 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/BR5JW2400020.