thumb|upright|A two-dimensional pink noise grayscale image, generated with a computer program; some fields observed in nature are characterized by a similar power spectrum thumb|upright|A 3D pink nois
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 0x136a2c8c44ddc5dd907c8fc6c5cd9b48a51c965188ece75a60df156059810036. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04a14163-76f0-45bb-81b1-9f59acd492ab.json and https://artists.proofprofile.net/proofs/artist/04a14163-76f0-45bb-81b1-9f59acd492ab.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 0xf34020c745c3948b2fc00e061f38b663113c3cd85a7498d5869fb3e9ded121bc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE52N2214901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514d8ff5e0f71129702c750dd17ddb7ca213bb59adbaf5b62cca6af56db19986. 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/SE52N2214902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b414c099a37fdaccd4871f44870ab69ea065c53026b52bba3c7c2e6b6dff07. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE52N2214903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc07e8ec6290c7ea2f98821c8a6aed6339c83d4aa0137ad2e8b6171e1c42648. 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/SE52N2214904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef84d92b31effe108bbc33d0fe1f7cb0f6bf090a6dc38c570fd57479cc9fcb50. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/SE52N2214905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14060b94d1924daa85cff020726fc83f3aabae148da0cd0e456a34ce598aa1e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE52N2214906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ecfe084996f8b665ec91d08f95e7043e869f35de6b75a314aa8fa353683f62. 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/SE52N2214911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd839f2ca60db03726829c9e3ccb03407c38f3d8777286c3169fc75d69489c91c. 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/SE52N2214913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4747ecb5e0aa09dc9f861763c8b8db3b90eb5429e2665bf526cf4f1f95cf5b65. 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/SE52N2214915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3395b85c122fbdd69614198d82841875e6c5fa684970f163e4159bd38f78d377. 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/SE52N2214917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1c7bb2d20ea959ada04ce18c3f718f0ec5f7631678971b109671e941dba6e3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE52N2214918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8829e30cdee2e23069981bbc7239ac29acdc3ca4779c08c73538335c9c0472a9. 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/SE52N2214919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c60a64df86c3e395ef5413e4b3c108838551248dece47a22bb902cfaaa82de. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:08:37Z), 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/SE52N2214910.
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 0xb5cec2fc72dff6709ba43d399c51427dc95919434611beb57b3c7e1c8f9408e1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/SE52N2214914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7fbb92c6dccc39b78745883369264d6f12e7ca09a55846f086aa8ba0ea7fa0. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/SE52N2214907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537fd4fdb553d3a68cc8d372fe69def7bda92cc7bd2f202805197db8cac5ea84. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/SE52N2214908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240c2e348b592cd0030d5aca0ec0d210c02086a94fc51cc144426af3c1fa6297. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/SE52N2214909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ec89ab2d6bb28371683de74740bb746918266d1f20ba148cc392b75dad6d9f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SE52N2214912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f923a7e4f020b9da75edd3141d181245d2f6b7117acda2baae01fbf0423b04c. 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/SE52N2214916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f307c2162c8683e92786275cee14f8f73cdf40fe9bfabadc6800efaf309d54. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/SE52N2214920.