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 0x805227b7099ab48f474c1e4102b3a20142962ad28bfec5959d48160a11d39204. 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/bcace269-e789-4c5a-823e-9104de76a83a.json and https://artists.proofprofile.net/proofs/artist/bcace269-e789-4c5a-823e-9104de76a83a.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 0x4f4830d3ec2c8818053917b14bf064082db77e44072c55e756030fc4be0b64ab. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:22:21Z), 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/QZHN91987780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb016574393ad2d02c32f232c8debb88d4bc465d68f66f066d636fedd0b2c8102. 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/EGWKS2274201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dbec069ba3357c419ae80dbdfea3c105f81771012f8c98496dd6c09cc33dda. 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/QZ4UU2001312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d6cf7a6a532e04a4e4cc0ae26724d541c57e3791a980981dd904b781fda797. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZ4UU2100675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec13a1667cc1c477ce88b25b5ffc24e690b56e093493a6f7fdad251c55d01736. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:48:43Z), 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/QZ4UU2101211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03eb4db6e4fbeecdea3fb0a60ab5db04ecf87226690b180d59d587bef38efb97. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:58:42Z), 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/EGWKS2260301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56239ec2319241116ce678971e2a9ed62b6c79435e19d11b3b51e933e1d9d78. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:43:53Z), 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/QZ4UU2100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ac4ff87128d03cc71c4698cb199b53a456e2a5240d0ef63c413bbd430e078d. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZ4UU2100677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706665e3c1d559cff9af46194a5dcfe7dfd9e75138973f5a45ab018d2e21f05a. 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/QZ4UU2100678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d86c722605b4f2c8a241a3d08e1e19a8e993cb359d7b169671e6c7ae726bed. 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/QZ4UU2100679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b0d1ed8a02e61d0819bd57b1227ea89bc25b88ea4a2c550550181f0d0b77fb. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:45:55Z), 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/QZ4UU2100676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9283a75a6b102d1dd50026c14f6929636d8148b45c1fbb2d065d17a76b23e5. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZ4UU2001652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a78c59b97eca5654841b0113dbd784e64605aa4d30d29c67c826e3ff63a70b1. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/QZ4UU2000778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe370fe5e91d22ff2c9ef035039f2f9f9fd9824639f876a92c33eca7ea2f7ef. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AEUM72200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa38e5c8d23c34bd8ed3ab1ab06985702d208eabe64deed8588e50beb0c52dab. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:49:49Z), 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/AEUM72200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45e394659fbc39da666be97681be2e3b20eb7cd4c661078d16bdff75d91ac9a. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/AEUM72200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b892e24102209263c1b68bef81cb8a39f852fe8aca62145941d6e01dbe06f8. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/AEUM72200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e3ea270a082bca46a02337ca19e7c2ec8221e4c8975d74a019dfd4d9b99961. 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/EGWKS2375901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fb632286780f3c2a902d97227c702b72b626562e19afd365a3acc780ec0d78. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/AEUM72400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b02d062adb7d9ed5dd296a295a73e58ce0946f75e25ac9e099bff2be38bd2d. 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/AEUM72200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb1db12d654b1b4dc7751235753320016e7c507e394a254c7c5eb1ff97ab488. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AE2DY2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a340db30c7b6991fd834c0af3478ab208ce9ecf36952a6744800b0811250963. 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/AEUM72200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2685a5b0234b3df4f922e98adc772e087a4a49e7dc949bb95a634d0c265e8449. 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/AE2DY2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd3b658967999107567ca7b9b7035d9a6d02552f202bd8b3f9197acf3ae7580. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/EGWKS2478501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8258e23fa88fdf74b3cc8921ab6131113a948a8b174ea3514b383adc3fb8ef. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:46:45Z), 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/EGWKS2447901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc15618cf6d2387037d4acb4f23c4fe64881f3e61323693f2817710c23b466f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/EGWKS2441601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00da430b3fa970ffa957ba9f20c8fc31be5f4e0055189de5fcb4534dc7b0908. 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/EGWKS2430101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb770a1e84c72b5eac7e955699e3d0f5d6453432931875bac2885e5f4e75ff9. 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/EGWKS2452501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8897cabf3e23a8f9eb9509ebd8853b9f5282973408ad032f29670dcda6a75fc3. 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/EGWKS2416201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbfca1370694fed787b07e23f7680b419d817a95f59889a0d3816e7e0dc919b. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:10:19Z), 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/EGWKS2464101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6975d75db5f0239428fa8e674725315b47db09019e0fe6475a434de71cc4c6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/EGWKS2461501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5191b1fb31a376a2394c0f83853e87ef2986964a3753f70b9bf245321dba7574. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/EGWKS2448101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc15618cf6d2387037d4acb4f23c4fe64881f3e61323693f2817710c23b466f. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/EGWKS2441601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00da430b3fa970ffa957ba9f20c8fc31be5f4e0055189de5fcb4534dc7b0908. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/EGWKS2430101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3926d1601f6602fce9e68dba2061df5af4dbcff145797a0c63a53f7b4d8c13. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/EGWKS2432101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b100f55ce41f1081c276016afec51495cd195d7baceabfc263d20eda90d6ca. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:08:00Z), 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/EGWKS2471701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6975d75db5f0239428fa8e674725315b47db09019e0fe6475a434de71cc4c6. 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/EGWKS2461501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc197bf0191b367daf6121614a15c5c89b0b902beb90a085a82c371b36cf653ce. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/EGWKS2465366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf38aece124aac6f67dec8e49d21e48e418655ddb5efe691ec405fee9906e3d5. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/EGWKS2412207.