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 0x514fde3f424ddad9266a41e40e51fcb14db879cf9bf38cf0831b54a5cf17b1e2. Chain 2 (Bitcoin): anchored in block 954032 (2026-06-17T01:59:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3aa74698-ddc3-4ebe-ac6b-eeca86aed0c6.json and https://artists.proofprofile.net/proofs/artist/3aa74698-ddc3-4ebe-ac6b-eeca86aed0c6.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 0x80196bfd74fb833d8aba130bec2406246ee09262c62e040719152641038be1f2. 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/AUAM10900252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00962efdf79fb1461f5e87f97c90e59f1e8e6821f6d4cd80b0ebe1b8b8fa161. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUAM10900253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2929623b19f845a653fc4d23efd8425f8e5dbfb170f144ab94a739a2bf5c9c2c. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/AUAM10900258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cffd93b088bd6820016fdb22a25e2fa0839af38a5390015a3005d18257052d9. 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/AUAM10900245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d9e9a7741ffd933aaec3d7091e88a32bd6a2d7242752a08b58a9940217d253. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/AUAM10900246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2938402360a0637affc55654aa1e0bbffdc63b3342cc5b5012360670724ec85c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/AUAM10900240.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25efd3ec6abc66269f616a3e49f9b3d06709bd0ab0eeff91e7ebb60b5aee55fa. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AUAM10900242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7789aacd0c4e939adb069570fe08f323531d81c7560f3311e884ccd5150fbd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFZ22566207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10ea54d4b8ed35d3a0f7d6458100620c0e8833bfa6ea63f3d7dd4eaef4b1642. 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/QZFZ22566209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9fda5a5ec33a236a11ca1acfae9b21091fb7f9334629d7be851cc7fc5368a5. 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/QZFZ22566212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf9f6bb9a665e4dbb8569352b1289600ec4bcac33861eecb4c2650569b4e51e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFZ22566213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e381f4a1b8ead1529dbe02675b6ceb2c1e9b310d95d9055c6e22799b30c4e4. 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/QZFZ22566214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904027a944c5f2d50f07137a528e2ecd4d753688d0c03b97b3d481088fbb10a3. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZFZ22566208.
The Gift (10th Anniversary Digital Deluxe)
Girl On Queen Street (Original Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171c9e74fe9b9b319ab561bcb6c99a167ce19e4adaa9214569705cf1fdb0fb84. 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/QZFZ32523329.
Girl On Queen Street (10th Anniversary EP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0a0c4b6b0b6bc163e4ad95e2e5e6225df9c410864d0196f5dbf01b4f0adb9e. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZFZ32523325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f6ae5dc047de3651bad8b517280d01cc5903dc8d46d39f2450785da184a8b9. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZFZ32523339.