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 0x5fddb3412196c20760703509e5f0bdf64e8063c9fa692e23e931a22fa39500fa. 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/7c26c8ed-eabd-4e88-b2c2-54512907c48f.json and https://artists.proofprofile.net/proofs/artist/7c26c8ed-eabd-4e88-b2c2-54512907c48f.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 0x3a1e3993c3c8acdece2bfbdf3a97243f79567852f6c35d09854787cdceabd067. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE5IB2313027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794195e8c8dc934ba85842af521d1e576db116a279ebdfb4e70f7b5f7996641c. 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/SE5IB2327451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39089f7a595cff2cec08a081b640745f3cfa20d2506b0529ae6ee0e80d87cf1. 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/SE5IB2322107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45e1f2d3abc466e4e48765c0a4f178129eddbcd949c505e3b54572608c77d33. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE5IB2312607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d954bc91ba6ddb5124121f23ce8c6a4e021432473fd9e5b93faf3b9d866d4a. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/SE5IB2310199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd896d28b1f9eea283f8cb19edc0146e79198abdcb2d7b6b274ad8e76f99d8c0f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE5IB2271713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5a27089d3a6b80bafc6734efc84ea8aa0944c6a60ac0d213366000178c39dd. 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/SE5IB2306479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e79ec046a7e16852dc8228970c2026e2124b10f9c832343a9bccf37dffcd37. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5IB2303176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5878d70f0b2b9a87d6c8275cde8e891d3966a004b76f67416179bfaba08783d3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5IB1901343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a91b432f05e70dae61e0cdc34a427f0608c616767bfef62e9e067fc9daf4c5. 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/SE69Z2403208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3067080e694200a6794256aea2d5992f7e96e97b2a9bb854ff27815ad3b2fd1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE69Z2409058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42382ce121fb6b14e9552511dc321ac1698b2ce7a283113f6b6f82365d1d2243. 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/SE5IB2309611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a5b95d1c821ee5d357f511feeac9f5e38e097be876dc52262b042451f946f6. 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/SE5IB2331331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95edbedb483165f9bcf65137f32d1ee32a2ded9cfa0d2e79d71e8da6a26c305. 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/SE5IB2338987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0498fcc2e77cd68143550636c8ac3a1dce2ea41360b0cfbf40d887521c6df4c. 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/SE5IB2308441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33936ecda86e677f2182bdb9bd4b3b2ce60effb1053dbbb12ababa51b1d78c2. 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/SE5IB2316111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7278cf33bb5f499e444f53b965e8934bc2dbe009fbee73bdbe60d567aecb6d73. 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/SE5IB2337347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4521406ed92dfae7de6aa7421404558326bbb74f53a476f95489e92999595fa. 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/SE69Z2402408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad3dd7481296dc88ca6bdba3b9500f4cc334e387821096bbe7b90611b6b9c72. 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/SE5IB1900605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912cafefa1b8ad58cecb5a1b95ea65e15c1af4765d063b303a322cba0849ccc6. 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/SE5IB1901305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1e8bc12a82b8d10816695d7365737cf9574cfd0bf8f46659f6716e798ae090. 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/SE5IB1900601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14677108c356d988338a3f16e65370d6d848dd2cb914ad7bc44b7e6f7f50a803. 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/SE5IB2000602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c0c3c02c84106ab51279ee0e81ce9fe5605182cdc2949566248b15de3d7159. 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/SE5IB1900604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3f91b01bc34995d6e25c2ac3335d720ce1f2cb31c24adcb91f6c638d830f5b. 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/SE5IB2001182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad88c6036a905f956c216fc3b1a856edd70d0939e5f32b1534047dad81787bf. 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/SE5IB2296861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbcdac7e32886013107200ee4f825c06a6194d7196a3b922a130bc42befd11d. 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/SE5IB1700885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb63e3ac2a6d48b1df09a4d021cdc9a3417bd8ecceda03c57e15d7bb95538e2b. 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/SE5IB1900819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccc975d00fc55a3fdd9c3b900ce623520735b981128ebc54666f65e6ac3591e. 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/SE5IB1901008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb6be4e618bf425925b0c25769c37dda0576eb1c4e26d21c2c97cbff3d8f7f4. 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/SE5IB2000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e1d5a333394759b92bf1574e02ef38f459cc69f77c80d264265aeb34716abd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE69Z2404988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766a34efb99c6253eb82a6122a501b419a8d401eec35f665168f4e24eb97cf3b. 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/SE5IB1701951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d63f8fcbb333d379296be0680a241ba3db91ef92fdf14ae5adc5a23910ca73e. 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/SE5IB1900606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27685cdd651bf4bce4deb020170b5838b8aacdec4d300a613e8d6ad26307860b. 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/SE5IB2316119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b926317b28f85689d5c660a3673c01e832dfb4f888b6badd064eea9428ef9d8. 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/SE5IB1801094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a261f0edb170d56968fd64c058e78f530561c06c85fef9aaa6f1506bf591868. 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/SE5IB2334955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c135639b09d9f7428b30932acdec6bb568458ad50988b7262358727c94ed6a. 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/SE5IB2000426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbbafbdcb7d59e3f059b2452bdc4674c08ccb7035c2324f5d15a91b1b36b442. 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/SE5IB2331051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff07fdb8a7a08792d39b02b14338e70c831ecf0fae1473a59d279ee7d5e51e5. 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/SE5IB1700845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2de9148336ae103b27ac731d30169539381f941d40590aa07827e4ef9df879a. 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/SE5IB2305354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2de9148336ae103b27ac731d30169539381f941d40590aa07827e4ef9df879a. 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/SE5IB2305354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad3dd7481296dc88ca6bdba3b9500f4cc334e387821096bbe7b90611b6b9c72. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5IB1900605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d63f8fcbb333d379296be0680a241ba3db91ef92fdf14ae5adc5a23910ca73e. 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/SE5IB1900606.