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 0x412885936bcb6c70e9bac8f71e7867103c885df2c0d16a951daa1dd5d0110171. 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/4e832568-6316-41af-ac6a-8ea5023f66cc.json and https://artists.proofprofile.net/proofs/artist/4e832568-6316-41af-ac6a-8ea5023f66cc.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 0x2a92884de59c23fd10dc62660e3031ab52d8b24e1dfb18e461958bf6fec8b72b. 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/QZPJ32159449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a73e0163917fdbbcdb2b7917749801833c25a805f0a5f92bf82cc3b128e13fd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZPJ32160580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d93de3ab7bd6f0908473cab72aee501c1e7e89e3d780ac61111e8cadd87d058. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZPJ32161167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb635c5b21cf2e03c8f8a47015f681a40c325d02801fb1d2d5bd3ced3b440bbae. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:11:59Z), 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/QZPJ32161171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2eb3e7a8d51b6ac532b7bdac3024d45139bdf9193859a03e3bd51b71594fe8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZPJ32161175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58081f0f782d8e3b8842cc686efe5eefaea5948579b753462036b9bdca26447b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZPJ32161176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4d445ced319b6c3a2e8b1ae667525d29909c043a3a1d259691d440fa7d5d97. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZPJ32161179.
Piano Covers Tribute to The Neighbourhood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a2cec509e51c33d2aed293e8e31dd15a29c4c58797ddf7c0ed47a402f88b59. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZPJ32161194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19faf28e433b0ed25e4b15cb8d986cf953bb0592dcb13f870abd21cfa220d3c5. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZPJ32161925.
Piano Covers Tribute to Sasha Alex Sloan
Piano Covers Tribute to Cigarettes After Sex
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f481d77184aed47dc31b63820125086fc7f9847caf1da714cdf4eb54b04f8ff. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:40:06Z), 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/QZPJ32165940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4fe3d5057c1d12f7036cd8add8ddfc3c390ca31de49ce0d756d5c54440f16d. 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/QZPJ32165942.
Nothing's Gonna Hurt You Baby - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefded5f402ac1609d2bf392ad29b5cb942657af445fdb84543e50a1ddc7204a. 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/QZPJ32165944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18dcea1039c727b0d3e7dcf69edd2cae8d21da6eff363a5dc3ef399f5a837f2. 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/QZPJ32165947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299907f35c1e67434be83bc94c184359c72a0fc1037dd844c432c108575d458e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZPJ32175338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76899e0ed6d1a814df5486386cc2cf7d78c64f4bf9c4524467224d8f61e36ab7. 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/QZPJ32175340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffd38c0bc6897ef7606708a4502986c26fecf10e2b4c489900f3bd050ba0c6c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:25Z), 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/QZPJ32175342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb507b018c82647697870a63b9a5c88570a1818d5878b74cbd18f31ec9050f506. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZPJ32175343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062ccad0ad83b713ad49c3169fda355c0e3c5a846ca667554419f167f4446d55. 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/QZPJ32175344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bb9a16c4f9ac19a62aa8a1b907c70ca49e4f3dc66ba78fe5dd52ee7ee2e522. 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/QZPJ32175345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6854971b6a4bef44077b48b0983404f20d7b9b3226c2e9cdbf23518925fdb76. 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/QZPJ32175346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88a45876882f43e844e879020e4e550133cb692d7f43c883af2fe3ad8bd6326. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZPJ32175347.
Piano Covers Tribute to Lauren Spencer-Smith
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84acaa15fb112268b5d8a7442e5c1a82e1bf68c63c0fb2afdf95587aab6cb324. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZPJ32215410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d31e203c5a9871ef0703fdf3d25370a2ec8a77a9884d6d4b86f7d9e392d1c1c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZPJ32215412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0835ffb5c33f490300754a9dfaf0678dcdc7307c5829c6f4f54975c6670fb6. 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/QZPJ32215413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946b4e88f03e0b480f908b474d3e20fad5d6cc731bb25fe83cfc92a9fe91a053. 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/QZPJ32215414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d489860d9dc1180d2d511579bdabb7716ee3f590d71d542defa41c3157eb017. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZPJ32215415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaed181f77d6f2266642cfff434b9b7c9eb05405b6eab19e1c665c4b615d163e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZPJ32215416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86ebb171fe7125751d126fd47e9417d731616e1df11188aae8d9e00b6eb5ebb. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZPJ32215417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277ca4cfd6ce893bd5b6cfb8d9339d0bb972a27bdb326d1e9edff73e1b1c67eb. 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/QZPJ32215418.
Let You Break My Heart Again - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7f665cebaf760bf6ac7bc0780f4ad9f6d6df9eba23fc99dc936cff97f7c25f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZPJ32215403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ca889aef090c97f86bbb8690dea417ea75db77d6590aa6e0a94e2cb2d45b6b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZPJ32215404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1e5db1d3f6b7cf20ba3afdd9f4fdc3e9182b18f6ffb536294c951b65235c5a. 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/QZPJ32215405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc0985a004ea92f891ae8de34b7829d32e36658ec452ef70c20712cbef2fab3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZPJ32215406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91c91e9aebe44ec93891d0e178ef8a39fe3a8951548f420d67f43a6041baccb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZPJ32215551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30cc0b3d9c17dcb6ea79f2012289ddf8ff3bb7224611d325402b792555f8d89. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZPJ32236932.
Caroline (Piano Covers Tribute to Sombr)