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 0x527564d4896721705545f206bc99b7e7cebbc54844807ed37c1a5e580a0827bf. 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/2c4380a4-e7db-4f1e-8472-4e756d11baee.json and https://artists.proofprofile.net/proofs/artist/2c4380a4-e7db-4f1e-8472-4e756d11baee.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 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 0x2cd14ec8c1af84bdef48a2e9cd0f6581c9aab5cc31169678355dc96bb16cd5a8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NOFGG1589060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c35571282862d4c2cfb2655d64886d72c243d7bd501b77041d563698395428b. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/NOFGG1589040.
Silent Night (Live Fra Nordstrand Kirke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ef8b9c33bd2b9e5837bf2ac78961c8d3ac96eab1418f13b6b5b0fead290fa0. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/NOJ2R1804010.
An American Holiday (Live from Nordstrand Kirke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb332249c607f5ee7ad950baeba318025671174717004775540f94bdc9013f20e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NOJ2R1811050.
An American Holiday - Live From Nordstrand Kirke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb332249c607f5ee7ad950baeba318025671174717004775540f94bdc9013f20e. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/NOJ2R1811050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2949359e9e5565939a65259eee62b3cfa82828fa310bb02cbcf2b105fc36bc. 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/NOJ2R2005010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fa87c132a807429a71f5f19692ce765678d522b299e117cb1d9c256a49a077. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/NOJ2R2005060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde20717d9bcfb9152dfbef81bc82cfe8461ea3de6783edab059bded72d9bd05. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QMDA62281707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daca8d3e7dc931ae20671444dc279ec071bcc35fb122f59786461fb7f1b6bff. 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/NOFGG2367080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b62f75fac69eaece3366f20fb829ded4cc73bb0ea2de5e4e8ebfd426f8de1c. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/NOFGG2367070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af922e0d89f0ede90cccd3fbb9377305902afaff5f73e847b1035a36267253c. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/NOFGG2367010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb04f5ffa5984f48e56d5e11348e91e13b7560222e91f3c55654514b5266282. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NOJ2R2201000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c414489992f7c5ca963c758763536742cfbcf06561df505305aeb9d9445f48. 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/NOFGG2367030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52136604d6ed8da041fea5961906df2b18f6a0dbbf74039b2222e7d526b8b22e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NOFGG2367040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b38767fede694dcd33f68cbe3c74cf59d3f3f09f94e79c5b97e78d1506d7fc2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NOFGG2367050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b62f75fac69eaece3366f20fb829ded4cc73bb0ea2de5e4e8ebfd426f8de1c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/NOFGG2367070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc496b073fd99824a8d15743521cd6713203a3067a427ae8e5bd9a4301042c860. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NOFGG2367090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af922e0d89f0ede90cccd3fbb9377305902afaff5f73e847b1035a36267253c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/NOFGG2367010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb04f5ffa5984f48e56d5e11348e91e13b7560222e91f3c55654514b5266282. 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/NOJ2R2201000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52136604d6ed8da041fea5961906df2b18f6a0dbbf74039b2222e7d526b8b22e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/NOFGG2367040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b62f75fac69eaece3366f20fb829ded4cc73bb0ea2de5e4e8ebfd426f8de1c. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T16:28:12Z), 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/NOFGG2367070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc496b073fd99824a8d15743521cd6713203a3067a427ae8e5bd9a4301042c860. 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/NOFGG2367090.
Plenty of Time, None to Waste (Acoustic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ede499a948df2359bfd352a60a69882111e876f08cbb9b176d01dc6fbd5bf0. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/NOFGG2367110.
Plenty of Time, None to Waste - Acoustic
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ede499a948df2359bfd352a60a69882111e876f08cbb9b176d01dc6fbd5bf0. 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/NOFGG2367110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59bac9e2c2ee712c36e96b766254611ba5b28418914a3f0b7019ad83d466f2d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NOFGG2491020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59bac9e2c2ee712c36e96b766254611ba5b28418914a3f0b7019ad83d466f2d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NOFGG2491020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8645fb720ec771857f2e4e4dc5c68dc155b5fb3a9ef9d4ba6959f7a0dc089d9a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NOFGG2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b3139490c649fa80a956b00f84d5ff91aad4c1a43f32b2ef53af0b79011063. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/NOFGG2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e04e957b1fbf84271aa8bd8368937d1a7b020314cb2121372f4a1ca921724a2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NOFGG2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e0a42611ac31e6f638269090cffdd07b966fc21e2dc07c5a396b23978ba24f. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/NOFGG2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aac76f8b077ca7df350f5ac60f6dc8c027dda033929eb740b83c5217ad7c241. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/NOFGG2400100.