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 0x05d59a5e1bca5e4d922f063cdaf766ab97cb1306fe5ebfd38a56eaff26046535. 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/6f4e4476-d043-41e7-ad5b-33a4f606a316.json and https://artists.proofprofile.net/proofs/artist/6f4e4476-d043-41e7-ad5b-33a4f606a316.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Christians (2012 Bonus Tracks Edition)
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 0x0e9e3939f58a43c1c4c66cca683bc0f4f123d11f016aea7d4a8c504b162de0fb. 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/GBAAN8790016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b3b621834b276c7ad586183a33fe48c13a909a678dc7f080d17a97807ff850. 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/GBAAN8790019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ce047ec192c4c1f762b91039e255e84a1e3f3ee5e5ca006883cd38f002f31e. 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/GBAAN8790020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1912e7bdf42687cd5369505ba1bd62a92009a57c08d2b83dbae1fc83a78c796b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:00:34Z), 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/GBAAN8790021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf75ce7718f0c43916bac5b00a53f39c0efc1580ab7bfc4f794656958f2b98f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBAAN8790022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440d51f4bd2fc1a72253af32efbadf7bd76a3b2bd38b184fab77e58c3f3962d6. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/GBAAN8790023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf8038669be42a5487e2fad99b18218c2da431e18d19fc9268d9c47ef4fa7b3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBAAN8790014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85179916e4ea0ecaf2a14e1efe89ce9cdf8f4c3b9d90502a717d450bdddad3c4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:05:35Z), 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/GBAAN8790013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebce4dda536632b851d5a7f902df7ef328c083666e4e1d2299c5cc6d164f0ddf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:52Z), 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/GBAAN9290016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0878d259c8a3c3d07daa83c397cd2ac02cbd64f7619d05a930703d35168a81d8. 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/GBAAN9090003.
Hooverville (And They Promised Us The World)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8838121691b77d01a887ddb933f00b177144fca4c37f004b2f418e58fe1e1ff0. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBAAN8790018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d5236771cbc6bed3947b4b215b55b822177122367d39a4cf84b8e2fbc31e2b. 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/GBAAN8800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebccca7566d2c4c0925161694cbf2ae7f1b3ce0f199a00c6bd1fa62b3645a64. 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/GBAAN8790015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdb813e6807d9ecba88642a8f9dbbc4964f04ec8bf96bb8a1123fdf7bc97667. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBAAN9090002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5627ec1b0eb19f1e4adf364d61bee869293d3079bf01a7039460eaf75a9478c5. 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/GBAAN9090006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15c7aa246f459f2412f82cc54ce6af64832c985884c0ba4dd19dcdd0e5d52da. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:52:47Z), 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/GBAAN9090001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5a7f0fd25fd08df49b3c95c6f344a9fb39434a8a048a5a3c3fb1540ca91c9d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKCV71500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20427a972497e95c85c5e5c671e448ceea677918c28fa745e8f37d2720785a3e. 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/GBER71700529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9ee955054d8137a786d2444075e78877c968f5354dd6135fa43f72c00fc0a8. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBER71700535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898f55a88f2d9b02e13c419f2f47a850867d5701d02d4c1a1e68f6db2f5bc37d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBER71700536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd658c1c21c9cdfeafd1a1b02c6a06bb71c1d93ef6921998439f6771f647339b7. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QMBZ91974768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453adea57c561d829bf32db6dd07f13d448eecf37d94594ed0fa3f86156d6746. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QM6P42022937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fd4e80ec8db9d89290eccddf7a9b7b7a0f5898867e3968a52782200a01bb40. 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/QM4TX2421755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781f6b6702ff0666523dcb4cb5d714b8d0340cb25c71998e6661c8e618d048fb. 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/GBAAN0201362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42154eeffef7cd0e2ca43f824887c0dfc7891b94eda8470b2f519f83612e0f0f. 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/GBAAN8900001.