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 0x779698e136c7eecca0ee933d5cf55dcdb8ea6a64e8a9067a04e2854b2f79d6ee. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51258577-f0d7-4487-a1bf-2e959059cc8e.json and https://artists.proofprofile.net/proofs/artist/51258577-f0d7-4487-a1bf-2e959059cc8e.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 0x2552f5430bda8e43fd76908c7762c4bcb18fbccb519a235e43cfb3494d6f6c72. 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/QZRUP2400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a472880130426a513485a0822dd0baeb6b259f460a8a45c9704fa7642f402b. 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/QZRUP2400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120df25f1ea1c702f063e179ea69b097b2ea2f619db4782979cfcb5e4f35950a. 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/QZRUP2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea740787ea8406c56eb3d0c2a26d77ec2b00b9ecc27a73a2515596f3f1bb1f20. 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/QZRUP2300698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c23737b6ded4f1ae493fbb844087e158c167239b14f77c07eb229344b4c30b3. 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/QZRUP2300599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ab63cccb0eb603aa282297848c1f4257db7b9e8b6e2f0edf8c89b6d1a38df0. 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/QZRUP2300776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f36bb109e8347b66b9e689e59869cd25e5c792ad71ad23106f5b85ff62df35. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZRUP2300840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1807d6ecc7070e002690d0c24f225875f57ca3ab6c944c7bbef268b34df1bdc. 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/QZRUP2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d086111bee9019f592ca00a31bf61b0d8d31d8f3a81733c3784f06eafa14e99. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:46:55Z), 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/QZRUP2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f36bb109e8347b66b9e689e59869cd25e5c792ad71ad23106f5b85ff62df35. 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/QZRUP2300840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ab63cccb0eb603aa282297848c1f4257db7b9e8b6e2f0edf8c89b6d1a38df0. 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/QZRUP2300776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea740787ea8406c56eb3d0c2a26d77ec2b00b9ecc27a73a2515596f3f1bb1f20. 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/QZRUP2300698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c23737b6ded4f1ae493fbb844087e158c167239b14f77c07eb229344b4c30b3. 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/QZRUP2300599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c23737b6ded4f1ae493fbb844087e158c167239b14f77c07eb229344b4c30b3. 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/QZRUP2300599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57095e332790e77db4c5df7fb516a363f974e97cbf139f81b53509cd5ec69cdc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMRSZ2200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fff870130145e3766e92ee67f8bca9e736d1c3bc758b10ef82752b36896ad5. 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/QMRSZ2101490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89f647e7fe4dfba4a554b6d4bc857a46c133d89f00f503b0e02942f98a1e2fc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFME1926999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321f59a80ae7412f6592b8c9503376037cdc8859100501ef482c8b596f4a2d03. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM7281979531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1acc6c97fcc9018245255651531714fa5c66a99d805fbd22f5796fb24c97a91. 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/QM6P41948663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6ac8193c6f6de94ef49741785394e5ad58706e5502844478c1885dd5297b62. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZWFJ2327365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdab473cc34b1098d87c812e8d6ecdf16f4ec8ea5411d8b0987a30685a77f01f. 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/QZFZ22442013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36a06827108c232aaa3f46f9a0c3125e73931709d0e966d44182c94a4f783f7. 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/QZFZ22442014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dabe6112a0f657b394fd1f9b102f18965752687606d93292ab99592168259ee. 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/QZFZ22442017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3b8ab0a6597278593eea94d8926c1defd95317a47fe8732b5b9ac7e10d066e. 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/QZFZ22442018.