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 0x282ecf608b46422bd88b243574681f6ccc452aec2381d1d7d9567aeeab87407e. 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/14cef889-d2e0-4048-a3d3-b2e43098f004.json and https://artists.proofprofile.net/proofs/artist/14cef889-d2e0-4048-a3d3-b2e43098f004.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 0x2f06b5f719762e8268f7b33c6e337893d14270fe1e9b7f6edb5c7b5e01e473cc. 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/BRI9C1301102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287bf2e50d4a16ab397930a7060b827a3e5546a1f998c372bffb124c4447243c. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BRI9C1301103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54438021fd11340e4c38671a3cc611127564294e84b2cb9fa84fc5847e50c7c. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/BRI9C1301104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e429cebfca87d0924600322aafb416067a51d5375f4baf852b5570adacd894e. 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/BRI9C1301105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f93124fc49f51d28450769ea5e3c07dab64b124c150f9c805a722332121c71. 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/BRI9C1301106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70aab453e901610d237a04d7179ad1191c152d6011727192f8237403c66e4f5c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRI9C1301109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9524114b568a7ffd7d3e017af5dde870300b5f7e11f848c89b11541895917dfc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRI9C1301115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd0ef6a644a7affe798e4c4908663ef096ac35d5d6e5cb10e3bc50f1e09291d. 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/BRI9C1301118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5e55771a2d6ad4681accceb5c7b6dd5b5b3874cee90b7d082bb6e751fff681. Chain 2 (Bitcoin): anchored in block 957561 (2026-07-11T11:41:29Z), 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/BRI9C1301119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2225f1729349524fc5632a35987ce5d4fae55deed1a13c232e750bda5caa17. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BRI9C1301120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5a41d8475a8dedb77ebdfd9c28e33f842196d2147b45245a26404d4ae9fe0f. 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/BRI9C1301121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a87f0c795e0da9d31dab1b1f2f3ca292be4f74a77e7cf8ca14c388c8044a34. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BRI9C1301122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f17c74c14a8159396c8fd2237d7cae5672973cf063d0ebc9cded2256b5df3fb. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:28:15Z), 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/BRI9C1301125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fce66b4ff97c52246be8e57a5ca7c06ef971798fb739ceb35d3147776105f1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRI9C1301126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90acb44a62f6b12b8ae5ebb28fd32c4e06c4f95ac50387efdf1b1f61a87bed3e. 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/BRI9C1301127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee06762dd03fdf0a19d14621932e2fd984e5e75a25dcd9903fe284e3bb3ae03. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRI9C1301128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27afc0f5e85e88135b4171cc69efaaf17e7a635bff8951dd34bae5cd609a19f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRI9C1301129.
The Beautiful Pan Pipes Sound of Ricardo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4188c9e193d7085cb8cb07878339c845666df60af5cf4265a0f12b3816ef9bbe. 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/DK5C50075146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed24d01b3541c3d8d60aa129bb4967371cbe84078f6373b0c82498853678d3b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DK5C50075131.
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