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 0x91e01047f8926042f3277abb32f4b90a27c52312109f85c0b61535f1c6109b08. 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/fe1886b0-1868-415f-9e08-d4f4ad525a18.json and https://artists.proofprofile.net/proofs/artist/fe1886b0-1868-415f-9e08-d4f4ad525a18.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 0x3b037b2054d8ba890f121375f8698dd803dd2c28d6b2d14ad193ba5b0d4cd47b. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZNJV2322414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69066a4eaf4e2fd55b4317bb06882dfbf12883903361aa0e4313d5ecbd41b7e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNJV2322407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898ab200b974668fcf454f065f7e5d9a7020fe9b26b066e8462114eb78c37e9c. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZNJZ2350370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f62df487489d161ff92d506526508df2b5d496676cbadc0707c25febabf5366. 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/QZNJZ2350331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736328e126d0dbfbe6d1db2d342946f276c1d794811074e456be39f0d4e76b2f. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZTPX2366675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa184874323ab638e7c56dd8b27c45319489ea8c34964623a99e1fdfcf6e40b50. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZTPX2377237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffa92289eb29db8d8f7af8a744196192f8e90d7ffbae7b52b7c4aeeb2881295. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZW9L2328243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8206bbbf5095409c7405e617a17f3f6e058be7e74ff85f57a46a09901a35deca. 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/QZW9L2328913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac5e0a54cff998c21e13083771797a248c9520062fd86067dd53de72579ade4. 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/QZW9L2329075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222d93f5995d4a4f2ad01e3020849e2691f55751aed52223bebff88a34dd9d01. 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/QZW9L2328150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b20b15106b44e9e0e7dca37dcf41dab108a3a5b7fc42430d2886191efd0e29. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZW9L2327205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d4f3c3e26c0ce5496b64058c7b947be2d256720bca556d65d04232a59daa1a. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZW9L2329285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c2279cc772ffbe044e986e7f74928fa3563d49337727c12fefcc542f16f219. 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/QZ5AB2450874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e059f82dae21fba36f5534d6e4533a62d73578ce3f954233d80623644a0b6ed. 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/QZ5AB2460147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cb3fb566620e74a85d821945fc3ff26a4f000000ff101dadbf0c23bfe433b7. 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/QZNJZ2410047.
Ela Quer Sentar pra Traficante da Favela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77603153e8b4af6545289234473372ed8b2bbf097c194ea0a33d6e71d4f0b55. 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/QZNJZ2410054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ec2197850a4f1c24e01565026d2e32f822adcf3b72135a3dc7ef14139becff. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZNJZ2410048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89b75af1fccab851c20629516f770144403b7a06585cc1ab0c2e0a21e9f44dd. 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/QZNJZ2410057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794f9ae831ac7ccb564b56b96a3a778405d854de2b493b460988fd05d07da04d. 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/US7VG2526290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22c5bc236e662456ff3e5b3cdec44dfc70b202c79f533cb2026be7c4786a49f. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/US7VG2526329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fda10df4ef58ded083d19975c7cdb8217d8fda9a258c00752b2b6db489fbee. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US7VG2526292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf416b72093348f712e79d15fbebfc83caa965f99c4e187055be4e35027ec82f7. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/US7VG2526328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918267810d361e532f4e3f9e4a20eadc773bc5e32b94dd2bee42ff41635fcdb9. 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/US7VG2526331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022036786a73470c57460d97e944b45901be5b785df790bf9783e55856dce9ca. 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/QZMZ92570980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8397085b81fdf3956fe69d592b3dd4fc0137180acb90d6e7adc24f01aeaa9241. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZNJV2552515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754b32dac92581dd9b7c24e09298f335b069328c5a01507b3b3e9724d39cfca6. 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/QZNJV2552517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0324971e65e0059a78ef87e9a74f1d94f5898033f20761a4dd692e6704f15b53. 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/QZNJV2552519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2088649e4976b48af58fb49bed7da8436badb48369afd14dc508b75db1999ad7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTPX2508552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc626416710e093c3f67a46f949ddb4dbade65b5848260fc118d300aea59e716c. 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/QZTPX2508553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f1131d6759ed364b304c5ea14cdaa8810c3bee67686a0cfac8426c071f88ae. 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/QZTPX2508554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012be3581877830b9fc6b547132eb39fc559e9b1f36b5d80d49c79f5ec1951f6. 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/QZTPX2508555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b200075c35f3a61587b425614c233d97422afbeaa1c36f6548c1231f6fa233. 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/QZTPX2508556.