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 0xf6d6efbbd85c779c7eb5eca2ded66ad1e6da9c649f7c21afc719ee5ed978a101. 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/3c1769df-ab24-4e07-b500-8ec8fd671209.json and https://artists.proofprofile.net/proofs/artist/3c1769df-ab24-4e07-b500-8ec8fd671209.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Academia de Música de la Música Ambiente
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 0xfc6a88524df19888f9376d5c1474c3075bc1dd46e6fccd5cf278d39b1f05aba5. 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/DEAR42583848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca27939972264e574048810a20147cf7a4bc1d2f05e3c6a811b4957692bd03a8. 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/GXC5E2401445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5bfe52deca01a6a96c505dcc1c0b4a028c826e86abfceb7a536111b1786b2a. 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/GXC5E2401447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff3277de52234304ffda626096f856897ef55d6fd5147162b640f8ebddc2047. 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/GXC5E2401448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10163b912a6cf6cbec21731c5ff7235e136db306308c322ec7c9ff34d4373cbe. 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/GXC5E2401449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914d35153da2cdfc41f68960234d5def6e8a41d40423d807227fa2ea0c3b32b3. 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/GXC5E2401451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd086bf465a03f13c552bae6d5fb1d59a446557ab0a3c9d90ae7ad539841b8d. 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/GXC5E2401452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdad605d84de6d0dc50ff063ccf9e3321b4336d18b2b54925bf4fe58d6a5b320. 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/GXC5E2401453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe308a160e71db70714ef492d3cb339a899703aac7aed06cc2534adb3fd43e140. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GXC5E2401442.
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 0xac3f19df26309401a0d2040d5dea899a0c04784e26aaf56d2d8fb1f2d20f66ce. 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/GXC5E2401443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e5a96dca3ce1ad36035832721f4df166cc53105141aa3b81310fa027770a62. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GXC5E2401444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae90c3f040ab7bdda417c98c64bb8a4793cfc52270e56ceb3651749ca33990a. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GXC5E2401446.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6251555d374093699f9aad709daec197cf381aa2c4824b540230bad57cbd296e. 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/UK6821749642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeca7ce8b69be6713b85d1b857be835bec8520b8de2898108521788d470aeb53. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNW72372867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e90a819ae39e79575a4765b11888fe721ad4ce422c90cdf3068effc1de64e5. 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/QZNW72372868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85664f585416ffbcc79fea62b92b301d7a56cb652ef409c543955715ec44c475. 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/QZNW72372873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb14a1d5da75e37f61cc5a2ce71082c661f873c9242a2c7e7a702c8bd7a5d53. 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/QZNW72371053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1de2d1ad4a8a0d7ac358cb4ba456a2c36655092ea070e3d815055d69974a56. 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/QZNW72371055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f68b35a1ce777035f472c4d1913a8f6fc2cacd67b8a60711a366b3faaac776. 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/QZNW72371057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b7cdbe9615a5bd23dd7dbecfa77c1b20f1929b7c1fee0d7810c6db0f3bdce6. 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/QZNW72371059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cafb4f1a47d8f882d0bbd908914edbd4e417aa326258665da4e9f4befef05bd. 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/QZNW72369020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2b0311b1244fab96868d5f8892f41910de098f2dbc86bf73f39db5b304e6cf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNW72366361.
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