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 0xbdcd31fa1535f41bb35055bf4c289888b8b23663bbe9d926cb3cc35cea0a4e0e. 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/2b0fe965-88df-4dac-9a8d-dd46abd27714.json and https://artists.proofprofile.net/proofs/artist/2b0fe965-88df-4dac-9a8d-dd46abd27714.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 0x07c17a88cd128f9ebc61e09ac1a04ec53f09b911dca6a299f09e3dde8a91be14. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/NLE801500728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef4159a09af8b189d3d77cb22d9b6674bb55b42ab82bf472106b95d9255b975. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/NLE801600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d4aee9bbab74dd3138c98162ced077cff073e2973b02bd68946ee39c514c33. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLE801600543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b4fc178202ffb0aa7afa0004b6fe8ea0a0669e3ef2062e4a6b05137f56eefb. 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/NLE801700368.
Kingdom Of Imagination (Official Anthem Fairytale Festival 2018)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c74d5ff0ab9fb0ab9b4134fcaf188bc09ded622aaf1f6f462c03ac783c4ee33. 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/NLE801800502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6fd534e63ccdaa88e72b6dd24141f89aa99070ebfbf4eb63fb3f54c25868ff. 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/NLE801900419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b59a6208547fa50ba7722f2242640973e269e229f5eec4a05897e9d7025a8c. 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/NLH3Q2000618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d96b27461033a2f8d8799c4a70a44dad988d94780a5f9fe4a736826888124c8. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/NLH3Q2000672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90fb4b3a69d928bea8891f4bffa11d10209be79db2c31e4322fcf7e0b6ab49a. 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/NLH3Q2000707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d260b477ac3b84c2169027d4b8cec957e0ebbed84aec423a0adcd205056c2fb. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NLH3Q2000742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3a8f14828e7a72e4de061a6edec8d96d41699725dc56ac87388366e33abfcd. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/NLH3Q2100783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce3f220324fe6e3d8ff76ddcf3ac600da4472aea082fce1e1e88f0d75608ca9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLH3Q2100836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9d74e222939622d10c31b4b9ff7a7e46dea3b734cde2ae0143586add0f1b3e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLH3Q2100912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632571520ca2fba0d7a117f3d14e89e4312ad9eeb00969800fac63abe91cfc0c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:56:34Z), 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/NLH3Q2100970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdca482c8a4a5006b79673a6249ede975f78157a81cc274bd901a4cf41581038. 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/NLH2L2200499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5f46d41a009bad168327a974b01c6e5b88f9ba36da499807e1a94d835f0a58. 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/NLH3Q2201168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b28d64149812c0c79c35578a9269805fef9fe3a0c55ab531b812a84063666a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLH3Q2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365bdfcae3946d77b15962fc3ed94327efcb1ebbfb17a624a0643136ad428255. 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/NLH3Q2300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440ef3adb2a3202bd9907b12e9f98d4a069dd3cfac0b5b21bc208dd1b2e7d089. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLH3Q2300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0eeecffc9293a7d5f4fc662c2e24674ae37625867a8a4c50f2c22411b54925. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/NLH3Q2300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0139864743d6faf6cfa15c065b472e6ee794277505b2c16d1ce086787fb3904. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/NLH2L2400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af423ec17fd8cc588870d3980b460ed935021f19c13b888b6b0e6e99d3ba31e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NLH2L2400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670e42e36e469765f5e04f0914673c8e920357abf806d63e266417fee583dea0. 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/NLH2L2400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd1393cd05477d378083350bd41ed28b0c3b40c7ebdc221ee1577077a049b6c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NLH2L2400280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e17d64dc0553c564d66b523cb3f81436a7a690f331b6ab61716d73584e5eea4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NLH2L2400397.
World Of Adventures (WiSH Outdoor Anthem 2025)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f134669ee5fc02c0e28298d488cd5ff395db2fcd6fc1bc8d51136960af13744. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:11Z), 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/NLH2L2500217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aadc89b5eb3dc78a856c46ef33c920a1c4b4a6dbb7c2b3c546d8c156ba44661. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/NLH2L2500219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1412f0b75974c0daaa27d918b0191453a238b87c8b6182aa04e4cfbc2be5d0e6. 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/NLE801700295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57400ad9983b0f792131b378520735143d933ab2e12f8a839799599b52ff26ec. 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/NLE801600345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499289437712073cd78b134d8db248154b65518fb73951974de59890244326cd. 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/NLH2L2200421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7aac02cb4a14ccf467fb35dd80f8cdaa43e0bfd0e80899cf9a481b7a8d747c2. 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/NLS762300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c0101cc05c090c446e82c39268d6ada02cf1c5430c1cca3a8b97ec7bc2070f. 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/NLH2L2400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726b44d1145d4e089ce80605d04d4a190f791c19912ceebd39950b8363463366. 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/NLH3Q2400067.