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 0xd72ab4cfc17c02dddd4fb457f85103309ba05c836920e82d6c83d487a125bd82. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e698ba7b-87e1-471d-a59a-f883b7b72578.json and https://artists.proofprofile.net/proofs/artist/e698ba7b-87e1-471d-a59a-f883b7b72578.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 0x642c163183e45a1beae97a86d4af84ba611b542a088349144145d50c7ddf1a83. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GXBAV2287862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7720239bf86cccca5de13a4d7204dd6a6455fab9d4cb909699a75c129177222d. 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/GXD7V2239222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a4dc2f20b2b7e8eed47f4307d21b5b4e11bdf2d4f96494d1698bfc9e7c65d1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GXD7V2274504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b976e7baad575d676da386aa2bc2ea1521148a6d3e1324f761d22f7c52cc423. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GXD7V2458401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec625a8c92dadeeb4d85363f7388a1e2aaa5693f4a979e67fa4ca6c4015407c. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/AEA3A2336864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d46743cc921c2bd997993cf250d6e7cde980a21a9ab2eb9f047c46c50c7e17. 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/AEA3A2357942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf2c0d8981793771e114f6fb3d6de030d3f04a1098270058b445278496e5898. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/AEA3A2377463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f028b07d567bf736aa33ae9d5106358f46fafe84f09ad003700369ed1ed4b0. 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/GXD7G2262574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec8bb15aeb5ea4f64db865fca78c97bed71f08e0bf2ce6fed78f54c85e744dd. 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/GXD7G2250865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7f5e54ba2550ecc0101f636c7c634eb30c6383690eee776cabcbf5c5fb0cb5. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/AEA3A2250201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadaeb6057de8334303540e345368bb8c99b45f88e565fe758aa1100131eb46c. 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/AEA3A2258632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2a71f3234217dd34e46afa2b92035fc6bdc838102bf2679002204555ef7849. 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/AEA3A2225365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa589ba760b06b3203fe12b2835d3f44bd51df1adbb58523de1bc2688361e2801. 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/AEA3A2203311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3c07a3f16405b3dc510e2d117bc7b5334e4c118624162dd412362f065cc6de. 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/SGW502276393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed549067d0300b6ddaa280c3340d1f6c3175aaf915f3c6c3742737616016f58. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/SGW502256938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6693efc53566b89e6e1cf0b08ab7174b97f1fbb47a2f2a3a02769f16dbe53b33. 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/SGW502206233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553647cd6249e7d14fe5b083b4ac8efe2b06d74d5c17faab3c9a667701bc2912. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/SGW502245472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfcfbef19bad46b56b9e841cb8f2363cc2fcb39fa51c345a8d8382a443312fa. 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/SGW502202210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d0e220b5d659ff1c30b14dbf9234158750fce921ad04eba42594a8712e9eaa. 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/SGW502266195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3908f07cae10f7449439d8c30908e0e641def6eea59079ed8ffbbd2f131708. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SGW502240639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5486c088cc3cab60a3bd0b82c8fb4f91887937c6625cb63015f0accdd34b125e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/SGW502225221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c27e88d341cf1694989eca022949b869db58498da098c9ab4fce0b5f2d9e50. 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/SGW502259835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7927aa69c5a3340c1f8fb6d598e6f4fe80a8e8512f1434d0f4ec70230c28fa7. 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/SGW502298365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48627608b37c9d063a225e3dea51396f0453f2e628af523016227b1a308494e3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:00:17Z), 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/AEA3A2568981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c4297efb05b93d60f82ad625252bcc6ba799245135a6880763342e57db86ac. 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/AEA3A2528672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555243df3630465d38d7c644ec5a28e0005161e45a1b2dfb58440cac5281d1fa. 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/AEA3A2565131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acab07b16e656ff2c5a74a24866b5d5a34139abae3f464ec18b141a965b016a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/AEA3A2590707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dabf7aaba8ea8e5ec6a1dc6cb87f568f77bce687c6d850a1fbc25c678b4be8. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/AEA3A2551558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ea77c5d2d629553197132080cc548ffdf3d10ae75c3a96c85718f5d94275e5. 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/AEA3A2512433.