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 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 0xf931f4910d2c55e72f06d16b8132950762f4763f30996951fd716b22fe2012bb. 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/cc7cdda5-de90-47a5-aa85-5b01e2fb05d8.json and https://artists.proofprofile.net/proofs/artist/cc7cdda5-de90-47a5-aa85-5b01e2fb05d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x1a9fff8576e2bbf29fd5949ac061c267c49eab48bfdba43029b5a56cc832d126. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/PL2C12345670.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7186d84fc7efb1baa1045fcea9dba389a0c786557863e8bd29b4939172b28d5. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/PL2C12345673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ee5708d4f53f8322ad40066c03b98aaa96cb550ca843c220735a196d7b5d5c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/PL2C12345676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff822f9cc13602160ac25728757cac9eec27ccff416b58266dd94a1331619100. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/PL2C12345678.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4024ebc81873bdb0643b6abdafb7f45309c0f65e842546d2965ceeaf14fb4fd. 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/QZWV32423998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7c21eca579697c6eea5161b010a599fc14d805cf7c876cd4983bc92e1001e3. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZWV32424013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b4fa19abe90114979d075f5fc9ee30af174615de72c6e55659e57413e461cf. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZWV32424022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b319ce7d4225dbc4364a76770e2048e194016be22e29e834cc7debd3ab0b4f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZWV32424040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba815da55d322379f224379dfa1d0baf13e122012cd1279c259e3329a75bb2a1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZWV32424069.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb09ba1f1278c0637afce7dcd0f8bb897b92f4f869d1447b5c0ba4dfe71353f. 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/QZTRX2452258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55268896838c6422f36eea10e165970f7a32536d3f4f62de446d7ec8156ad75f. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QZTRX2452285.
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Relaxing Ocean Spa: Meditation Soundscapes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cad16bed527cb8fe3d2ad3ad03fd0c249e6df979dbbfbfc38338f09bb8ca1eb. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZZ972481669.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5794e0a1a176a516e1245f6cf82ab31cba1c23cca330cb338709aa85958578c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZZ972350766.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4390948e68cad2b1a8e6857c9d5ea152ba70304070e70005e49ff27511036a73. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/PL2C12346556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bc6287f1df527ffc7db3def190103a8f9235a723d08d34bf1b2de6eeada9e8. 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/PL2C12346258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aed23928a51d4e80e7f02620d434a3ad8a83a1dfc478292cf816223560a80a. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/PL2C12346259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c4a8c9584a10601994bdacbbda1b555edd412f1dadce97506d1e80af097fac. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/PL2C12346273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013f35b0f54b8664dd217a288b584c758c61b9ff5eac658255a0c9d3013f7e2c. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/PL2C12346276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a1fa8a57094028a488a1a780a7762bc07a70522c27609336e1b1dc2d4baf11. 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/PL2C12346288.