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 0x3d81f798088635b53e471b878c0f205a0ca823395826934fd6099d7cfc1f0d04. 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/250fc275-1fef-4a68-90d5-85e1a81e4432.json and https://artists.proofprofile.net/proofs/artist/250fc275-1fef-4a68-90d5-85e1a81e4432.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 0x8e747d801354cc9e82161e0d540bbdd36d55dcb1b1e15860956b13226fda0c72. 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/GB8KE1852428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c3dd01a7ed4011c160324640f1156521616226d7fbd3267bb0d2f010fcdf0a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/UKSVC1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87a342d88c49c21ae86527bbedeb736afdc2a52ff0d5943e34d141c4fd3fc5b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/UKSVC1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbc728c6d105451e1359be55954a7c1e72880530083cc84b0ebfc882eda1896. 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/UKSVC1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9f38e9dbc4e3bec6c6e501fe5a8f87bce82aca775a7ca2cb9b84c70656e418. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:49:58Z), 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/UKSVC1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b544d5573663106c5951d981cfd04db623e8f9615910ab56ccbd6e3f9718c08. 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/UKGZJ2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e2de7a24385a4c7586ce0c25d5d5ed5524f926380f6d687d82480b8a8940fd. 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/UKGZJ2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7d3fdc21b27ac2bb986456d2cca5a3f664b5c763a6c990fdf56658c4d96c1a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKGZJ2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb59f0c0000362c8a960dbd54f97ae2b84f29bd0dab8ec5d14b41c66ff8aad3f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKGZJ2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9398457d585d0d4b6a0e2c20e912b4080bae759b46cf9332ee678982bf4c56. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/UKGZJ2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c94d0ec2ee98082fe81a8e825cc42f158b6e616a727aecf40a104d58bf918b3. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/UKGZJ2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555db543b4275be2f27a181c643153089c62ab61ab6f0280c9ac39506315c770. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/UKGZJ2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afd0c3c8c8030182b2199ab6205e62314611a69c5ad9405f26756064d4faf8e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:37:03Z), 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/UKGZJ2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9398457d585d0d4b6a0e2c20e912b4080bae759b46cf9332ee678982bf4c56. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:36:34Z), 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/UKGZJ2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c94d0ec2ee98082fe81a8e825cc42f158b6e616a727aecf40a104d58bf918b3. 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/UKGZJ2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4824f2cee0749cb1b7e4ab3eebd04b0b2c8262a571022f20ad8c6432b54d95. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/UKGZJ2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e84420f1e996e9248df4a1f4423b82cff79df0ba275a5fea3bcbb8d2cdd2edc. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:26:47Z), 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/USGC62001084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75effa7d2199ac7229e5b829bf2155372c45c2c0d437a8b359c8a8efbb573f79. 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/USGC62001154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49041bed295222f2d8c38bd78c3637268cdd57dc3ccd438e464a2cc326ece232. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/USGC62001153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0436dbfd3a21f4648bd2a5b89de9fac6eb66e18f5bb1e67886e214725a38fa8. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/USGC62001155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcf2e7b7336b3432dfa18e26900e7f4f14685596f3630ee504c59b610c39ebe. 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/USGC62001156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577dcc97cea65f6ca9309d0246a713f3d7109b71f1ddd7ebd9cb8e8ae13e4802. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:05:16Z), 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/USGC62001157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31de01d65b4651512d08de79c702e7ca39e22ce605c9b7e2070ae945ceeee1d8. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:58:26Z), 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/USGC62001159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeee92413a1e494be14d22323dfc59c5647a3ac3ae25dbe0205f50fb9ab3523f. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/USGC62001160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e3e54d7fec1251510dc14959823490362ab24ae5df742b7f52ffb45361646e. 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/USGC62001161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5a17f61eafa9fd5709111f6ef87f50d841d56bac8d6ee5df07a0a61056235c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:53Z), 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/USGC62001162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb39260d0656a605fee2cc49f76d6d1580b608187a3a57f6fb8da99e9b8957c8. 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/USGC62001163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f6628a3a6bac3050096518d240783525f338a86f32b2245384eddddd73a0d5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USGC62001165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc88ae1e01f5cd1efd59305c1dd8c0fe13481a8edbd7615e05efc5e6c664784f. 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/USGC62001166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d525f82f97eb8c3574dc6925c31e0d660f4f632f9c12b699fa4600ad019042. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/USGC62001168.