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 0x11fe71372ff869a7491f36e360d228e91f3bd07e7817a65eaf123d9ab692d77f. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/042b0a47-e985-47e1-bd90-e14eb4368f74.json and https://artists.proofprofile.net/proofs/artist/042b0a47-e985-47e1-bd90-e14eb4368f74.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 0x4d6b59f5317454e49e19d6ed5576c2573dfec0615c6c56057add6ab370c8a50e. 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/GXD7G2517140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d7d907350e96a87e03bee1d277baded007e25bce4f7e99f30e63ee0298e578. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/SGW502525358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b02d6cbefe3f09f2b9b779f1ff5f2a29618006cc82fe1a17b8a196a8184abb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GXBAV2177412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6bd796a035ecb6b1db5798192bdc2f87c198860fc4e987811248dde2e5303f. 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/GXBAV2174049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fa4dfcc7efe349c3a3bd32be65d40595ca4b2b85dba5a25069e9d66a3b62e3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:31:31Z), 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/GXBAV2013845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed138a641e1d28e6b8c9757d21f2b74d8cfc67c12c71aa4ad165057b581ec2f3. 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/GXBAV2095969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba68f72c274d24912c242487e900d1d047d3fe2b89f12bf1f9a0b4833fac368. 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/GXBAV2066316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac399d60321bcee13bede282b826d8d502291f886771abf4e0a22e9cb7677a5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:37Z), 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/GXBAV2050009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7efeddaa5881dc8bb678399983422ccffede52eeb73d7756a2789a30acddba. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:53:23Z), 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/GXBAV2078426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0df003b8e6ce510cc635f80c5eeb31117fada549e0829e403c78123c623bbe5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GXBAV2073420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b307ed9e5d213ea05f0638dcd4a160021d6acf5cbb85defb93a6afdcde313f. 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/QT5M22551483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a174623fbe4fb00a7020a6c66b7d891fab6e0a01c0e0ef1bb51f81074c5b74. 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/QT5M22594753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f6cf31a1e74a90a5e0f872144bd95ea6afa864ae1d3512d9559d1ed110890a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT5M22569617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1714e6fab1363b0666b324dc95869d8007b77db9bdde96610ab7b656632035c. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT5M22530949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8562fdf4fbe89a16e857355644f012ae6e67be1b5cc4ace5c9afd1330a36b6bc. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:34Z), 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/QT5M22594909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadefce20bfa55c9a6079a1807c6b55e94cb8586058f14d2c705078594d636d81. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QT5M22589260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f920ead9c13ad30c20805c4c1742d2d0084d11fc582c046145807bee651f68. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:45:21Z), 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/QT5M22523487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61187c24b31bb688fa300c9899ae65c1436ac2a439736d1e06fca009d7e1bddd. 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/QT5M22592867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744a06be5c1fb1142d8e55c9a61ab473132812b88134a0534ee2dad2aff848fd. 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/QT5M22564961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46650bd921573ff1e87c6516d0454fa7752d8fcb9ff230e42ae91f52c2f85471. 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/QT5M42570044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23febc3e030c877f653e359add0a6a8f8f7e1f353bd4b2dc12c7ba03ea33037. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QT5M42566193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ac9fe221ce227b5be6eef382d7b50ba9e8f2f4e8fcf77a782920c9600bb8dd. 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/QT5M52507393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd983d327b2e05f3fb417942f7122decbac923ac5b0e4cefa53c6e8e6a77813d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QT5M52587619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a28b7e6ffb6275052e238eea5567a630d7045125c0a4061a5f0d5da63c818d. 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/QT5M52518891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fd06684231f80485c54a452e83efe379ab7fd75c325b34bba65a47e3e9e39f. 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/QT5M52564667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35b86d573485f30ec374af185b93a4bf57546067ebb4d27eb06ce32f81fbc1d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:12Z), 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/QT5M52539901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1a0051b43228c88a187b12cdc9e320791f5a4d93537558abeb26237bf32aa6. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QT5M52517655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0887a333ba325b2b03ba2331cef3ba961fb9a5a3826472f9e657a478981a4969. 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/QT5M52589774.