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 0x9649675a93a02f222211899ee1e82d19728f8a8832abb6eaf87ecc2b4e2a93f0. 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/5b015673-5041-4ade-9c6a-202b54895755.json and https://artists.proofprofile.net/proofs/artist/5b015673-5041-4ade-9c6a-202b54895755.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 0x3d483d96f95df374cf9016c6c872c12063bef1ff586d0ff02f31becc0fc3cb6f. 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/JPPO02204318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb28a456620ac65eaa7aec8206174172d967a9ae01d7dcc444ad84837f73900. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPCO02411300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb151f3cf13bf3b76a9293952f0619d37c39d33b660970d2e0dffed1aa16a5e9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPJ902104030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0cba9b67ffc5fd3aac4e1ea1cdbcd11199fd490bd826ce712557ed40bd9e80. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPZ921913943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65e8a1ee06b0144f9f4747a7fdaaba282393057fdcf82d1422033c2206f6f9e. 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/JP92L2422090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65e8a1ee06b0144f9f4747a7fdaaba282393057fdcf82d1422033c2206f6f9e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JP92L2422090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafae36d8d6f2d7c18bc0f9b74acea1895759ebb584587e775a3ac3cc653cf7de. 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/JPT592110499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9de6730810b78fb8e3f8be11cb61e28561d2c7cf3ffb3b3930882f3b47e93d. 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/JPT592110504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c99fee57780af82b174eaccf8c337228bbe5016cb1d21f02b64ff2e2403f0bf. 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/JPT592110501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b05479b263ac3feef54438503e1933d318b4c138bc034271609f55d0d6d0e8. 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/JPT592110465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dc56b77664b35174a55f944bc3a796f5de41c3b218fc8124a66c553ef65b38. 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/JPT592110349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8717ff033612afd0ca9e5e82e7c3ecbda76204d26a4038eab6a39207fd880b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPT592110505.
Innocence (feat. Hideyoshi, Only U & (sic) boy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bb0fba5cba4cc0e7096a25fa5b5a601b392485860e8a9b5a49e28fff90cb3c. 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/TCJPN2021926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3209b0d089235876d02ef4819baad32f6a4562443dcd7b6a26aa2ec3f508168. 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/JPC102400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561cdffae44b0f9ff37987fcb1f3cb49231ee200fe1c88c3c5bb63e6713f782b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:04:28Z), 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/JPT592110498.
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 0xa103cd7562b97c13b2da0bdee6313360bd49d5350c2b3bfcfacdc4d4d076dbfe. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:40:55Z), 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/JPT592110462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4a0ddfa9172b0488ee234d2177fd0a39cd8406ded5b06d431e96bf4de17e77. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCJPB2429658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08cd74bd89e1a4e5d9cd6be887bbd568174b27086a5f8bca9121ba3fa6dfa02. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/JPT592110502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741256c00400a76d4b706b09b88f6833d4c5f1853ee5e45b2a5f4fac874ec8fb. 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/JPT592110503.