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 0x7dadb8bf1a8db2a1e604b4dfb7bfedbb7d6f92bf921aea8dd63256c46e129d5f. 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/1445fb24-5df1-48cf-bf88-0f9d0c3f275a.json and https://artists.proofprofile.net/proofs/artist/1445fb24-5df1-48cf-bf88-0f9d0c3f275a.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 0x6a27c60c87ea0f7a509c7e3d9260f92503df26530a5ee32c77e702699e2d040b. 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/CAKHO1912626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2c17030237cc2e251e6be18ca2d54061db9dbbab5e9c198966beb21fa77d17. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:49:44Z), 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/CAWHO2011568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0112a7cad0ad2dc08026dc288d0801187383b0eb030a29ab4c6540f74312f8e4. 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/CAWHO2011569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f2df3ab24dbc0c40d6840b4d1f98b213d1bede41511c7a405af37b2a70eecf. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:24:02Z), 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/CAWHO2011570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd775c63ac075d5a066a599b8de649d2cde8fa4b2330bd1e8066a24011197582a. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/CAWHO2011571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b735b3bb687895836ed4c94a20a758ad332dd34d2cac2ba44385e30ae9a565. 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/CAWHO2011572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd80e8405a9cd95664410e64c9c27b8bdd0855a4cadb37619ab041185dd7fdbc. 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/CAWHO2011573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684b7c4dde5243613abf6a05337de4995a69122feab5a2cdbf02e9865421d96e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:44:00Z), 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/CAWHO2011574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a8e05475da3c5ae557aebbd47758f3d3789bb9e625d9525e439223dfeeff76. 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/CAWHO2011575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9107d719b7512340f8f29d533856bcd3f68d8c8dc6235dad3c7f390713dd4d11. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:39:47Z), 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/CAWHO2011576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5855798d8efa0585bb297049ab8b8c14a617f3132a1afdda84d3cae7b495dfc. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/CAWHO2011577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e03d67087bee238ef36a212c06bd5e978434da1ed46ff2ab51f3623c7613d5. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/CAWHO2011578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ec8285572702873fc917e536984e88aa5c0ddf421aa8a68290198373d1cd2c. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/CAWHO2011579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de77801daf6bbaef2cc8431dd1e2f865b54788783f04f3604bc7d0fad22de7c. 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/CAWHO2011580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da9f95271707055569987fd165aeb382f31888da4785ab29c5913514c357505. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CAWHO2011581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bb2ec8b304679c3260f17c456b05bebd8f722b6eb251614fb6bff46d80b73e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CAWHO2011582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee98d5737a13a0a547b07684aa7a3783b56ef86beb021f52c220c4710eb020d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:02:53Z), 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/CAWHO2011583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b65bc103efbc1eeed44db66fe8f22ee552a3008815b65c6fcd716d603f749b. 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/CAWHO2011584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2addc08a3655c8ea38dff36ba425780edddfb4682a5beabb21288f0db3e7f7. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/CAWHO2011585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91e35beca39f89603b30b3b78e39b178e402d44725797732a7d5ba098c2e63c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:08:51Z), 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/CAWHO2011586.
Jazz Reflections: Serene Sounds for Peaceful Evenings