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 0x69e5151440794226dc2554baa158d982c27cc1b1d8fae871293c16dde0159f50. 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/5f34b908-2638-41f6-8e59-739d969ad9a3.json and https://artists.proofprofile.net/proofs/artist/5f34b908-2638-41f6-8e59-739d969ad9a3.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 0x9312956e32a73af9955bce1c3ce852fe47c1c32fd8677112fd7b347fe5a31300. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QMY3V1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154ce4634430bc0cfe20412209c56ce75c828a3413bd25b8101a8c68f627e9ea. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMY3V1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137aa670c751984e151cc92a8ff00430451619add937c7ac456d1c342c98618e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QMY3V1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f414cd178697e15cf93b25a5b5ca4ab6a86145676eb3da3fcfa5d08bcd235b1. 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/QMY3V1100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc3dbf0cead4996578fd95f6721c6781ab0060b2cf04b2b3ae0d16f92e1f16a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QMY3V1100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eff9eb35f04f8849272bb97fc30566e7619e21e623417c430608a588755879d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QMY3V1100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01478458caacc0b5b2c97c754be6fb29efd840236722291ea7cc2c27ae820186. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMY3V1100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21545093f9441122c95ba18bce2269e28adbe82d2d7df3ec81035f9089ac964. 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/QMY3V1100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606618be852c328af15b8366f28ffa95328b2b1b93d4617f49829af05949c000. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QMY3V1100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c718ea62f20bb98a54fff3abeadd18f78594adaa25925da7fb31ce7ac1e5fda. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:11Z), 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/QMY3V1100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0286bc2cd523a604c25875c60cdf7e969899da91c8b5faa750cd11cfca2af9b9. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCACL1666482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0148cff53384c4dbae8afec9b06960efdb91ddacb8f6c2ffbd656105bae53486. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/TCACL1666483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced325bba3494842fe3c8bda9789b3a4e90b66f0e4d68f5a1692d99b81d4f6cb. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:38:04Z), 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/TCACL1666484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a89e90c36d5eaeb21c8aa1edbb9a90738d13a4c07376d2e60438ca37fb37c4a. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:26:10Z), 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/TCACL1666486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb24cedb278a26c4fcde99d00cd9b6c81b1c960df7f740bd86cfb5eaacebc56. 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/TCACL1666488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5ef1f95b7a9dacf4ab68831854a1ff261b9e60186ced1aca93ac4af6b689ce. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCACL1666490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a7c2d3b66d8f1578f5218a75ffbfbce9de683e2644cf5c60d025ea515a8a1f. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCACL1666491.
42 Grams (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e219acbfcf328d9ba8528434ceadc8d6a8e6097e75fc355a48e5cced55330d2. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/TCADM1873739.
Still (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f6ca00aad52b3e554305a94c13dcafb029d786542a78be05cc3a0d30144048. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:04Z), 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/QZES51934461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9bf736f7b36aef8a1118d90d82a7f032170afff6cf3f67233edd9160fa5bb6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES51934465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19bb7efa7b2bf9dc96e4356a1405e4989a484b908f8299aa939dea53d48a459. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZES51934466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f0e96d16c2546866bdd0442e0c409d05b1ae4f7ce3fc3cb47467f3e9c9dd3e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6Q2100909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e4a0344ffc3177d8a1fff5ec7e350cb84260d2ff5ce0c987db98e7fa4d975b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFK2341096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814bc693bd56765d22b26b6e5652e5c0173a1beb1b415e959adaf47749201238. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:28:23Z), 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/QZWFK2341097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bb115309921a493983623830f8c71abac0a320b6b12cf71aca1e2cd57127c0. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZWFK2313897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4783cf89c7dd880c410b7ac3641a24e185f863cf3b0a6108c5a846f3ffef1d. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZWFK2313898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78638ff987886d200f6e47e0aa22dfb8cb61a8f179944f41a9e8b343282a37c1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFK2309263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860b036764353324d32b102a4bbfc354bb5fef1dd155992bb8f0504f248f02ca. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFK2313896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90316af8c2d98764dd7ca3551d1b3165893cffde133a7b8cbf1e849048fee869. 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/QZES62556208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3f3e754643ef35bd7c3e1232c633788bdbd21a2e9141ab720eda8d829d9bd6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:54:38Z), 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/QZHN42584798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a7b935b8b42e37b0da1f81f6e308962bc1ced173ba7ba9293e5c3218b48b4e. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZHN72517328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3f3e754643ef35bd7c3e1232c633788bdbd21a2e9141ab720eda8d829d9bd6. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZHN42584798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90316af8c2d98764dd7ca3551d1b3165893cffde133a7b8cbf1e849048fee869. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZES62556208.
Untomo Suntomo うんともすんとも (Getting Ghosted)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3f3e754643ef35bd7c3e1232c633788bdbd21a2e9141ab720eda8d829d9bd6. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZHN42584798.