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 0x2aa501d81ad08ed1603170a30ef0d364795d81671a235ab4b4458031eba98bc4. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9accce80-fe70-4563-ba5c-46c962e334df.json and https://artists.proofprofile.net/proofs/artist/9accce80-fe70-4563-ba5c-46c962e334df.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 0xc487e40eba4ee8fbd81f94bf77660773ac7b0484d3e72b93aa4f2e3591168781. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:23:01Z), 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/SELNA0500503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb8868771eb3a677a64adc760e40dac5aecc755f6a7a11dbcd9cbd597877fad. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/SELNA0700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112c15e5674af52994793ffcda5c843b474505950809344e845d12d3198dd88d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:42Z), 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/SELNA0700302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29ed5e04058ff8702577d30c0d6105cfcb5d73cc7a9160b0473695ca059ff4a. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/SELNA0700304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cd75e4d565de70277eb57e67ab54fec06ca021efa07447c3d8463b4c2a5f52. 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/SELNA1100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fab9bd1d2c46c43c428f76287aacd78c9962ffb93efedf958d7c0fd6cf6b17b. 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/SELNA1100405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fa5201d2f29552be1f8b0a6dbcd3c6a3fc6338c2f883c9d63e874cc9213001. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/SELNA1100406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfed498df17f762e7dbf37c4ee39dc2d95b5cb2cdf81fcbbbe9d541f5566b247. 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/SELNA1100407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770bcb2e286f44360826e026d1fd8004e2e082507365db0803326ff00d0a2665. 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/SELNA1100408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d71dfb21f18f4aa2b46d901101fbfd951468070c50c061303b22ce510158451. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:52:55Z), 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/SELNA1600401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4211ca6cf0416a8d291ef1343aff624ff9530149e5a7300f6b751297b97d7d0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SELNA1600404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be4369bbb0659d109aa6149c3f4a140da285efd82349bd12dd7905b3c90457d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SELNA2000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51412dddc6ffdf310f9759141ac24cbc1cf0706b51c065ed75e08d309251f00. 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/SELNA2000502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd9710e12f6f32462817b5e36d6844366d9d22d3e245c0a5a7efe22001d783a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:15Z), 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/SELNA2000503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfd5e62986bb0676664ecd86796fd6b3931c9744a2fe141f021785ae577208e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/SELNA2000504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176f553a70526dcb9a54a143c1f97a765ff7dc6d85b2f6a6dfda05dde51af572. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:03:44Z), 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/SELNA2000506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a75941a8ebe890dee0a2f5c9ee4ae9b82153d9b1265c336ac91cafe13de9c4a. 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/SELNA2000509.