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 0x21f3f464c10d64aa2d9fb0f6fefbaf1987075e004e3135cbfa975f332d63ad08. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77ef244b-4896-420e-a9c7-58cbcee973ad.json and https://artists.proofprofile.net/proofs/artist/77ef244b-4896-420e-a9c7-58cbcee973ad.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 0x0216edcfe8649d0569b8f18ee44df5102456ab1d0f462bcfbd9dd447d9bfdeeb. 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/CA5KR1506543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17813906d5c7b9aefc5fceb8273311829478096c8441b399e36e0a95509a78d9. 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/RUA1H1728709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a8406522413fffd9734df74d4a95431eb5f4c6f9c33c1f62ab8854a8578b81. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/RUA1H1728705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6773ed083bd1b607e239a0e059baec65c15219843dcee6e2e1d7022f7d130b06. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/RUA1H1728704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8d3ce131b3a049354c8bf8f719d8ae7833c3f28e38af121011b4af8e1af77b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/RUA1H1728707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c7f66f4b6288912b66540878cdd557e5c62dda68dcd167c82769da04c9270f. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/RUA1H1936893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0664afc26fac654c88ca1f04f890abc6b0d574246ab8ae441e0a15a65e003f. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/RUA1H1936895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63655c6d4dc62d410d7cebe9fa30db4dece97b98ac703dacc47f46feaacc994. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:47:37Z), 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/RUA1H1936896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e907282b29a9dd9b70a4d4062b7a663cca9d24c4be0f96c4c3954dc9db59f4f. 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/RUA1H1936898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2c46709420fb8ab95d4864847aef90a37626ac8c8cf8651da92435dfc528b8. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/RUA1H1936899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c34201e51a49e78c41ed2c6b431c82e98a143d536ee4ceeb84164f606c6aec5. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUA1H1936900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d521c76167b4d39486ba7d75c8da565e7410b4505e6d15c19d85038f409d85b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:24Z), 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/RUA1H1936901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57821187cda12ed3e8977e7104cfd61208be102ee9ab2d63f9a65f8178271e20. 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/RUA592000831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccef441d1435b3770d2e05505c2893926f1646bb0791dd7ff6bd05091b77fd4d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUA592000844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cba1ca1abfae9a96be32a49f21de37dfd8b535c1c98b1422d9c40337b406f4e. 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/RUA592000667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e099d3ad075daa76a316ee0a1d7eb7b43ceb10ca4b98fb2b00005ec027b50c. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/RUUM72000895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f0b966dd8870417812fc451cc573b7159276556e75490530adc248e90ea256. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/RUUM72000894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bec10b590be5d848e987a8f4ed5d733b02599192b61423174e2b0e41cafa65. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUA1H2155314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58fc0dbb22d4f6c54f0232717b255d935e8098bdc1c0e04a209d52fde6ddb8f. 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/RUUM72100636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6a08244d4a69a9aeedffb8ef93a3359cad515390469578f0a4915e04819d1b. 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/RUUM72200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc007428f2ae5b73d14d43d09fd81c52d0044de07e184f14e959bde644b88eb3b. 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/RUUM72200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2433ca7e024188ba4388e535090442cbef6ddf1b2d0a84615809dc2ef8ed33b8. 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/RUUM72200216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2560fd02880bed16ae48a9b2ac7d809d412d8a8cb4ab208210907d9b7c496b. 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/RUUM72200218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca87cdf9e63faa5cdaaa0ba7b5d6be49224f67f4b35faba43b7a7e42d4e09523. 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/AEA0D2256820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0df16bf268e720f7a250cebb6f21875659c40de94efd26a38e960d454216169. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/AEA2W2329511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9edb3d6b493969afbf2beebe34c4047bf5f5b825d1d367247fe6e588c798598. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:46:50Z), 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/RUB422402785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4280c6a601953e8695c63367a155667330a99e8d0c3dcca7174a0ec1a1511794. 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/RUB422403168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6541aa9c18ef5212aa6136d71e13b37671676436a14951260da820c4899de30. 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/RUB422403000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb80efa8670176a78fef38e6c37e4a08bcccdec82da8af1eaa22c2f874730a7b. 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/RUB422403169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e301b4ddf3528060b19b15c7659289dfcf466214190bbe2dba56517bfc44c3. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/RUB422403170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3b72c86a34d24547373d56b992cc05ae2209be9baef1d82452560db517ab90. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:15:58Z), 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/RUB422403172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9edb3d6b493969afbf2beebe34c4047bf5f5b825d1d367247fe6e588c798598. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:22Z), 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/RUB422402785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b58ce162c28495affb166674a04988620f0b2cc18872ae358b7176b951027ab. 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/RUB422403179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a694c64771d7a4b73727c0090825e2564c27b1070356847a006806c5a011ad7. 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/RUB422404247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fb606cb18233883779a7c079ee8a8ddf1c154340c97b39f640a1b4cb79d01b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/RUB422404248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842e49e042e11fac4b6c258387ce468ad4efc55d32942fd15d23082252b06338. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUB422404251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb83c7fcd8e56bdffaea8b1b9aa4f802e2e7ded77e6e3a3d8ee48092f42a8b16. 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/RUB422502505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50054ef51273e9660b586e829dc2378bd4cbbf97e3a1f4a917dfada056fa8a3. 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/RUB422502506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd353aff20788248dc0beb94f3ed5dda0bba479507d1c82ac830b7c12a3899387. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/RUB422502507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3c12a01af643715833afd42b0c919adfaad2a392fb2ed26826300fdddb563f. 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/RUAGT2542254.