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 0x1e156c9f4e78b1f15017a13b38a80bf6710401f87bff37b05e3bb5e405bfbe79. 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/5613fa92-d865-4ce8-a547-f6c3f241e591.json and https://artists.proofprofile.net/proofs/artist/5613fa92-d865-4ce8-a547-f6c3f241e591.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 0x847ea778cd834a0ec61baf8fc84747cf4432826d5899cbf2054fe192b082052a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:58:43Z), 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/QZNWV2458411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81ab23809c17752a755aae29931e15f499ee9d1c2b32019861390e678d161f5. 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/QZWFN2492151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff3da7404640aaa8522b9ae873e1acd68576c8af1d3fda4233ba51adddf3d40. 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/QZWFR2404795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f23fe9b831978db36acf5fa35239326eff5917db24dfa7fac98f129e4b0f9d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFW2445521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363b96614c570116d0207d4ae9517b3191fcfeed32a9379035cf2187fdd54207. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:21:19Z), 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/QZZ7M2436005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b8274729229e6de5fabf43db372cc9ab04977fc1f8b0746c093535987eac94. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:48:43Z), 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/QZZ7Q2439093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800c501f6bf17589ddd4b46197ca3c2238d2df9565438d38f6976ba40d12f04e. 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/QT3EX2441778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc8353a35732d34dc2d8f7aad428bb50a3998d42cc1380ca62548eeaf3bd73f. 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/QZDA62533451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1ef1e7188f04af7575314009a2cd7b04e0a1036c13e1e0de1490bee5b4f336. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:10:07Z), 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/QZES52525450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2fd8c0c5c41a7c0652e5cd150534e896aa481fca2016a0b77bf6dbb85b5c87. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZES82580600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2428f77bb2e36c58f8de3c0ec6004e2c9be5fd98395937dd00888860ec0537c4. 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/QZHN42587438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5343914c2b65eb35cab83b238dcbf45a7bfaa4e56a06ec63c4bfb7e834ea8b94. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:19:01Z), 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/QZHN72537123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25e23cbe112a6a716fe424496a53d3dd3978f1a8c4e74cfa82e68ec21de806c. 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/QZHNA2538003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505e84d78b29b20c59853677979441886096b301d64a55063decdb18630ab474. 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/QZMEQ2590964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f35e053f0a2a7569c294df386fdf648cfb21c20bc251709b888f7e41b900eee. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:40:41Z), 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/QZNWR2572990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f596beba2d5812833fa1248a7c6e97eee4f880306fe72def16f5639b8b6fd5. 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/QZNWX2587039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7186bb6a0a4b0be24c49e37019a852ee5f862bce4fc4c6a333bbe1ddd8eab1b7. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:27:51Z), 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/QZNWZ2576575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3aabf60e696f81eed1b58f6557dc7926a68bf1b066ecd796ee770f9427b6776. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QZRP42580820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb1698107f0f9e4a7eca24a1e21058a784184bc71d33f1c06c3b05dd9dc7d76. 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/CA5KR2536414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4cebf4facbe18f2d19e6977b04f8366588884d89c1c951e377094c617ccf05. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:16:55Z), 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/QZFZ62554895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab9970590bc1d0a116d97803cf03e0293341bbe3709c6a1c49ff891ae3bab58. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTBD2481756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a565646bae11bd5e16d136b8788976abca3a467b56682b12db5f3c78f28a119. 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/QT3EZ2480364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0210f2181119433206c75c21e702c75633a70cdd137566cfb66def7b3bc039da. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZNWV2458410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb056ec2cef561b47e7158b9646e101cfd23fb433d4b6dd8d06558510b7ec0a7. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZNWZ2422258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdebb11e4385059ab989e34cab0bfb457aa1cd02973f23ab53775deae33556f6. 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/USDCH2355183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5c1157656b4c064c227bcc9fbd9110ae5b7aef39d6a5ec0852b38872db215e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USDCH2355387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bdc6730327ac4a3b3ff1b5a59671a0eeda9f04223b582d960c608ece46fed6. 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/USDCH2355544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214aad3e112cc781c00169ad182097cd3f70fa0fca4884992e57f75c316afb69. 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/USDCH2355581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a827e965de30422967d2b6fe68cd234a08b9030badd1120f77e6664935e63f. 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/USDCH2355601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2b7373239ed9b98e5914e0cd02827dc2e9f875ae5e56e489c28404d3644eb2. 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/USDCH2355628.