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 0x38c60a9359870ff79a295900b864e2f84636889cc4f72367fbb6cc0d32c6979f. 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/0811c0d9-90c7-43cc-829f-da9d8787c92c.json and https://artists.proofprofile.net/proofs/artist/0811c0d9-90c7-43cc-829f-da9d8787c92c.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 0xc1a1be7633f21d2f121dbe2b4e3e3f0824ae2bb92b89e3a371f5168ac61a3c09. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/BEN581100814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78aef7c04a52d06cc9b6373bb0a21e6a8e1efce2e58cfc98196f966f493d51d. 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/BEN581100837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8cb36517e84d8f9b58af6cc1a07a5d34234d27f29eec831ec46a98ce949d47. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BEN581200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce26a71e0e94beef4dd164a9f7fe27c0356cc208accedf1d88c9d50177bd0dc4. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/NLRD51609593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51439e528a16cfc7e14906dd76a9faddf16fc33f5ce336fd8e9e21eb9967fa83. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DENC31800324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86c41f2bb534916a125ec2cd61380cbd92ffa9c11d0e6c26fe0e57bd91bf764. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NLF712201536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfdd1df17fca61af1731b0bfbaa4bea1812ec9cec1b3aea8ac75cfde4d9f880. 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/US83Z2234297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c0eb4053d3bfd1c446db70ad12648b51915561d8507b4d85952cfc7570af1a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJG2521149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f3aa06f4f1ade2a9d6744abcc2207d81cc4f25e6d30436fe44618a6d5e8769. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAJS2572155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d2c66f904438cd45f9df9c789a841b96be9ba21d0a194baadd57c22b5c07b0. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLF712209060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95391da8225d1cde8e21543af3480e0c81b167f205636e6b187109191f1505b5. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DEL021602029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86c41f2bb534916a125ec2cd61380cbd92ffa9c11d0e6c26fe0e57bd91bf764. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLF712201536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabbc967f6aec6a8d0b2710a7e7d8e98db476ce44cac9ad990e803210c9a5ad2. 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/NLF712003091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b73e6a44d902be4d73e973e4261cf27d2327c3986c96b2cbc66dec2a6fc5e5c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEH741601736.
Papi's Cenote - Petar Dundov Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a084af36028cd17eea99fcfb2a4ae014143ee1951597dd3dcd43f508592612. 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/GBLV62305678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a2a1da701b07f24faf24e1c58f51eeb47fa0569549c42c8ec19e48d768c830. 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/GBEPM0700091.
Balance presents Natura Sonoris (Mixed Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cac9dde31899a78b5ea97b6bb9a2d6341ae0117835fe9d30173de34936c925. 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/AUXN21725821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e00da5c7adeb8e49ad6d0737f84e846d156d44bba2d80258e90c7b759a24f0. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/AUXN21721624.