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 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 0xa99234cf3d0ee4a214eaba4fcd0e5117a5169d5bd35d55915437a044fcafce7e. 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/6eb57777-77f6-4f07-abbf-b7022b0bb2d1.json and https://artists.proofprofile.net/proofs/artist/6eb57777-77f6-4f07-abbf-b7022b0bb2d1.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 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 0x765aedcbdbc33adb2b59567632eea8958313e62f7d83f398844f7c387276af98. 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/DEUM70706672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d91065ae3a030606bbb981f3307953db8c9a59941c8c5617b3d07366d1705fe. 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/DEUM70703227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a3b1f8d5d60ecb9ef7d75fb1ddb6bf0b986cb72a1ce3e8d34260ad6dd8190d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUM70706662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe78643a95f6954ea05e717959489bcb07b8ca81744a670a43d7d140682986c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUM70706663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24614cc5bacea2a9a4bc4c1007f880d8ee1bfe569368c767b0d1810eb9d9bcf3. 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/DEUM70706664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53646ac3048bdb8047f21d7fbe69f6352620d816a170debe3828a91dcb71b783. 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/DEUM70706665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7233f5178ac39fb62e1deb00c3c6b388e0355fda22a7ef9411f34276191ac7. 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/DEUM70706666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16af30bb880fc4be326bfbaf2b85a1de54b53028fe46e049fd72e5e56966ebf1. 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/DEUM70706667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f0221dc6361f1276da8632ca7bc052dabd0f167ee19d4b1f7ec8787d5b832e. 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/DEUM70706668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e1344f5cce39f17a087a94c292aeb58be408a892248b759cc5dd0fbba5c1d4. 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/DEUM70706669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436f99f10658aee15fa1559549342ad9d09cfab44385cf54a3d8f31123a69d2e. 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/DEUM70706670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda597835ec76643f6704498ea9c0a6656d116d06b30ee4c45e5eec803b21c3b1. 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/DEUM70706671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2c48153e7f3051dfaec56c318ec3f2b1396f9d0fb991aa9fb8f4653343e7c1. 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/DEUM70601678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae55fed23e3791b13ebf527b3e6efc2fb87909eb07aab2f00c426ba871b71f5. 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/DEUM70601848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0d6bc39a720de2c9d0c94e25632054e6d8fdd616cfaf8efffd23bb534f8708. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUM70601849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec90eac3398516f774648cf1a4d80ee193dd69f58c2fd6a965ab72539f2a0e5. 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/DEUM70601850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04456c5a588b986cedb34101e843d3a1a6393f3a9539149352d9eff5f537c5ce. 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/DEUM70601851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6349fec967d6a81d8fdd200b526849c87a83e41d259786e00596441ccf6dac00. 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/DEUM70601852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5777ab0117f9ff8d3b1f1edc4ee168dea5d1d5aec5ef169a9b5f5d06a346f052. 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/DEUM70601853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d9c03b237ef23678a1f7cec2ec2763aa63afdf37592486ad691055051bdee5. 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/DEUM70601854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e06905142d40298cbc252f22e0128a871d0f686c06d464f2ad5632657449401. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEUM70601857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85bb4c8f8bf6a60faa5a586fae2777609ca26f5149eced3a5105d65da4eb932. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUM70601855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841e81dfd9676cc78b9e83e8e3c1d7fe28452ca5921a8c4d1ec031252fcf47a3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUM70601856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac9b067f4ad81a635c2c700d4e79e4e4a3c3eb013ba2cad1a602bd13ef8645f. 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/DEUM70601679.
Captain Cook Und Seine Singenden Saxophone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14638609299b30e1c98070fc5f2ceb6046c2940616930e956bbb136bb50c73e. 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/DEUM70603202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6349fec967d6a81d8fdd200b526849c87a83e41d259786e00596441ccf6dac00. 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/DEUM70601852.
And The Birds Were Singing (...Et les oiseaux chantaient) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693cce1f3032c4a7af131a0fd04d67ff41d0a057b5156d5a193b2d5b012ef8f1. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/CHA017825010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a3fceb2b422c3256b44a0178edb9df52e9ff58a570dde9f03949cfa8e9a8d9. 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/DEF066600900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8af7f1ab93f0ba44611b72b788db7f2e4a3dab027276aa008bcb6d05454cbe4. 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/ATK229600093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea9412bf63924df68e3a56535eaeae493e2c4e04be81dda1a7623d777f1fa51. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEA609500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f90d58c03096a0e4cb0509526f5dc09fdded2da7e7802f38a49c5d66bdbc09. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEE869000048.