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 0x14eb516dbe53fa1d993cbb4d2277c1e939fa8546c795caf57c6221fb8313c9d3. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b906d7ae-cafd-4b00-8f00-31767fe7d59d.json and https://artists.proofprofile.net/proofs/artist/b906d7ae-cafd-4b00-8f00-31767fe7d59d.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 0x877cd7c6e18b6e1d3d567332e9736d6a828509bd840a510757549d1c9703e08f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZ7M2464985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f59618ec170c5be706e2b37d74b9417ed46bd227b6a175040a21063f40b2a0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:39:04Z), 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/QZES62506183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cf7b93579d514ae8819ff62aabc2742002fd3d176ebcc71a960cb6626bd3d0. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:20:55Z), 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/QZES62506184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a67aef1fc9fe7bfc05351feabf8319ded0b982198808f229b976bb032dbe549. 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/QZES62506185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8521c0392ca58bf76d4d45a0e28581bc1a7818efa3a2feb607776dd79f863b. 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/QZES62506186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81975d9dd8127629d65bcfee8eb7b8786b04700c504516d6075b8c6647f3cef9. 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/QZES62506187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b34fc32d02c83383b38b394f2d0674a62b6b5ac00e19ec2af9d5f110212e58e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZES62506188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacf432eca1182fc3d24990805c9d8eb9facb0d75e3b52655c89b2ad53e77d53. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZES62506189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e435763277b327ecd6463ffe3dd9bb062d14169fad5777b5a334fc8c23f98e8. 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/QZES62506190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130b60b73b5a77baacb3477e0f4fcbfc26fa39d56c3ce02b088fb343d27140fb. 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/QZES62506191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9575d0e0d8defb6c85fbed9a9662959c7ca9172070cc5e7b5fc8fd580c3a07. 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/QZES62506192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa200304e3ad245c92b7a484e849c84ed1b9529f82916ed292aeed30ad58f045c. 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/QZRP52516687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a29ceae231385c0d9f9b1e6cc913d8003c28c06a401277b4f1868b856cd7eb. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZRP52516688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1088d3be62d0f27e18336a7685dfbc125fae102ca9aba20beefbf3777cd6ebfa. 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/QZRP52516690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce11279fa40dd86119af9fb87b3c31475db3c0b0a506b14bb020868e4309a5f. 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/QZRP52516691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27806bb3057d608a4c01114d507fcc99759073aaeddce26aac7aa95def9e5518. 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/QZRP52516692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257e284affafb3b19e1b1709a28870c835456c1577478f490b2dd3553e7c20c9. 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/QZRP52516693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2057c1b320cc02588a6daa293396d15893c67b96f60cda05c6562113a742f94b. 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/QZRP52516694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c5305e08de4fbdb0a25cc2c2f00c404f8b0bff757f11cec2fe509c63bbab8e. 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/QZRP52516695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a6b791f46104ef4da58e5789768ae3ae0f9a0514add34fb8ea59cd1a179e62. 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/QZRP52516696.