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 0x1ad28d0b75d61d6b385c8b81f5449bf6d3d48fdb07b29c7aabfb9e5f0871606c. 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/032f0c3f-5c24-44d4-8905-3111c4a2ad24.json and https://artists.proofprofile.net/proofs/artist/032f0c3f-5c24-44d4-8905-3111c4a2ad24.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 0xaa54fcf66c00abe30b17a752d9d6d6875cf0f0305d03d4353049cbb92d26cd10. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZC62295576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc0cea19d6887b0220171c90bc942b8be8d7642470bd212e1e4f6483098ed00. 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/DEZC62320399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaa7bf85dec0ceb8130fad08e1deee61441b15b4d24f16820862c93c5235320. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEZC62333632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899f59aaed9afd1d986a8ecec6fd17bc824727a1dc6d406bd9c829138541178b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEZC62333633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c68b9bc2eabb06b1c661a66f3722ae69460395ef85b1b6504acac39a7c32148. 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/DEZC62322170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2161c4562fa1922b239a6f5302b7a473a07eccfc36853ce7e2ebd4832bbd90f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:42Z), 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/DEZC62333638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07e49e30f5dd24ed59047f63ac432f7c3f15ed820eaea880fdcc6ab2279680c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZC62385445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f6f30c3c33b9b3c500043737808c8ad13db10e34c487993ffcc6d613c91fa5. 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/DEZC62385447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d02e9d0d4b09d4611efa44a85065fc5d82baba37cf060e215daaa3bc152389. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZC62385449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccf975f9368caff630d4c73f6bedca3c3f7bb3ac938d1511311e000a1faac0e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEZC62352734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bb8686bcf78f249144baccf14af2b98e299a46a07cf7610fedfc894d0c973a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:20:19Z), 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/DEZC62410755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019c6fb649b3b8a9cbb90e234ae397b0a3408f9b6ddc17441e8fa835d38b6839. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEZC62405139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9cad38637acac69a3d3e337f3f4504b35d01427909643fcef1f89a0ad0e616. 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/DEZC62417898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524ed23acd64cb68e52c2753d556ed6a10c02865ffea3c650b55e37112526356. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZC62417899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dfc8a23e4ac16da7925701263b91e2b9d33a5dc11b2bd1d2063c15e0088c8a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEZC62417901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3c3474d4bd495ae2be3a1421f7e2dcceda2ec4e06139d1dad0e3611afb38f6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZC62415359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bb8686bcf78f249144baccf14af2b98e299a46a07cf7610fedfc894d0c973a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZC62410755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f926c1c423e4feea2c8446077b8ac392cd3423d5fe1c22e52a626ba7ad45118. 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/DEZC62437797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd793d639eb4fd57d9f8018f85af6f59da42014e114feabfbb0c3661deff36494. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEZC62455616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd3ceb8eba7aa54b6de7ad5eb31c7744a26d07f76ae556291a07e34c87524fc. 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/DEZC62456098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b463b16d3ce918c2dd16ba4cdfc1656fb2e3a0463e211a0f5d71f2d17187bba. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEZC62466139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7641495237a93056491e3c5effb5fb529fa5d91673acdede2f8fb95bd9a00b51. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZZ7W2413610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee834f32f2f38e871d07c9591a65e3e9d820dbecb79e87c5d87d12a6874e46f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZZ7W2413612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8134c2ecfd0778054aa297cde676f7cb43194584c1e395cb4f5f2cb14f5692. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZZ7W2413613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd3ceb8eba7aa54b6de7ad5eb31c7744a26d07f76ae556291a07e34c87524fc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEZC62456098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd793d639eb4fd57d9f8018f85af6f59da42014e114feabfbb0c3661deff36494. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/DEZC62455616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd9cc6e0252a9eb983187c421d2beec47a68d4817c7846cf55da5678d6e1821. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:46:29Z), 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/QZZ7W2413614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acebaaa9da60d5a8b08d56d0d3aaf24bb7760c6f841a54ad1a609fbf965885c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ7W2413615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38a9083507f4542829e2b3e4ce8ab664cda4f6133de02f9a0230b586ec380ce. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:17Z), 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/QZZ7W2413616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b463b16d3ce918c2dd16ba4cdfc1656fb2e3a0463e211a0f5d71f2d17187bba. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:16Z), 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/DEZC62466139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b8091f59de2c06da252ae14e75f7ef11c91eba4269d042092c277802d63701. 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/QZZ7W2413617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b2b10036355a548449f7462745e1557c3726a6a6dbc4f31b7d691e58e636d9. 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/QZZ7W2413618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb9bd0428f012289c9765ab3e3e14472c5fbaa2a4c9343234a45796982a8d1b. 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/QZTB32593175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885311e0f3fe1b1a6284c9ab6d2391d4e0a7eb2f04d6fddaaf53419f9f966661. 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/ZA58Q1600299.