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 0x449d589f44dab1fd143b5d80b4b89eb21a40b61ce6d52f74bae4a15205bce0ef. 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/25aa3321-403d-4fc1-b059-5747311420a0.json and https://artists.proofprofile.net/proofs/artist/25aa3321-403d-4fc1-b059-5747311420a0.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 0xd5c5839e74df37de53d091d04b61d81f481ff512969aac634920dc3b000e0db4. 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/QZHZ31970118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d90c91661cbbaa9e0988a5c063f22d2a922e70fbb960b3f4ef14ed73906100b. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/QZHZ41979203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1d4736492bbc9897a446514ae3e8c608958a118c90136bfbd23489f3a55a77. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZHZ61909369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef32d4181c47d6f41708536592f3c094465154f1fb7944b7bccd144987ec333a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/US7VG2057012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2ae56d63b37a1d5be93e113216051e69793fe5e712029bf1fbf85c6d4299e1. 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/QZGLM2051023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91fe420388be3a7baab68ab08e0dbede048fc73e30ff2cdb0e161211b12ae94. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZGLS2006798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc375a40851ca80188ddd4699544b8e2d3e14ec49d89d7ab3949c2c94293acad1. 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/QZHZ62024765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629a0dd1f161cc49c92e2375dd5cf4aae62287600dbb9b92406a5ea2d4f8ad22. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/QZHZ62024767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a2b8ebca41e8a40fbc7a94ba799af211fae21868a6dbeb4ea5c6a8f30c9f56. 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/QZHZ62024769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c153f82b5bbde36154587a28dd8e7edd21b1066b7a6bce30649cacc37d7aec. 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/QZHZ62024770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe745d94fa314b35c347b11de7057142b0fb9ddf32999cb79b4e602845dac2113. 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/QZHZ62024771.
Que Vengan los Bomberos / La Pijama / El Zangui Zangui
Amor y Paz / El Año Viejo / El Año Nuevo / Mi Arbolito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf2edacc9a6d1735cedc5c1cdae306b357e110444be50a3d2c65dd6c310fd4b. 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/QZNJW2053449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90beafbfede4cd978caa8072ab03a3abdee6874ac36dc6ca2d13eae25fc3264. 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/QZNJY2053104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918b0cc0b9d6ebd4c1f8f5896133e51fca1e343eda43948107f56c1ec14fe564. 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/QZNJY2053106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4f041105bf14bfc7c4066ff1a3583c4913098154e95ca4febec5c4bc98a619. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZNJY2053108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e19579c2df289d0200700859ad30809be6f8a479761a37745727753206d4951. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/QZNJY2053111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356ca9f38ac5081e8cd819ae727098d1afcae486bc3bb013d28da2992fe30d0b. 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/QZNJY2053112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b91119d3dc08ee4bad44301307f865333a0d8373efaa3aa61f553065ccc9ab. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZGLS2109423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4cd17b964a7f51ebeb9d6079eb2602464f97be1ec5815d64887146e72f69a3. 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/QZGLS2109431.
Tiburón a la Vista / La Rajita de Canela / La Cosecha de Mujeres / Los Borrachos Son Ustedes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4438c2f88f91e763c4c946df45a4596b52660f5933d04311234491ee1ca7c9ec. 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/QZHZ42180725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21be4f3be61c6436e8aa84d40dc8558945f2f49f5f4cf89bc9766baeb07cbe5c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZHZ42180728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fd380e72cad47058e247807a49b079f2b54c6a8b08681d529807039fb81dd1. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QZHZ42131139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2cdf01a4467ed3fba0ce56cf24c80ce3dcdf566a8bedacc19dcb068b7bc050. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZHZ42185238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c11249938fdddcbcbf1c1cd1e26c7b5a3005a0ce5a02a1f17f5dfa8b9542d3. 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/QZHZ42185239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271b0b5143f1e20b7ea2bcb75610c295950e422839c945ca7c9514d4556f5f82. 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/QZHZ52167072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bcfac90d3dd22b11b0ebd43a0cf445b8383e78140f9a2470e3754edc591de4. 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/QZMZ92179312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b9c758643962ad92f3d46c5a703e4b49c409a700a220b8fa0c66d15ade1221. 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/QZMZ92184605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad576dd0a279818dd33293ea2d95c8d1ab7dd14b7e33bc0a525e360ebcc1c347. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZNJV2168485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ad78cab4b79f23971b629a920c0f63313b4e774d40f4cc16a29c70c3d4e9a1. 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/QZNJX2159446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeae62a8172e57f31e86786b79719a1f390eb9a91493d8e6000bebf21c1e16c8. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/QZNJX2167080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a11b92a677ebd891a940353997a96a4b702e0f010344147e38180e570b8409c. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZNJX2167128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3923be28d02fe9f4edbe99284ff6b30621462befff7729b55990e9d62dd828bd. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZTPX2191695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279cd5f32c2f5a04f9f3745cd6c738ea910580c1f8f84b4ce1451c28fb9392df. 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/QZTPX2191710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd4ed96c2f77896763d2da0c0f3362014ca7f217408c16ed7b65689bcd0cbac. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/US7VG2286601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d32ac69ef8039623d31f7d83dbde79738199c4bda2ee35ff8792899deea7859. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZGLM2216169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3569671b8b1c4cfbc191168c3b09e3727d97b440e847f7b58c559f23ab441f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZGLM2227992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45eed4ac28027451e6bb1f1ba5753f11ca3ec3a45a55b362566128933f7ffcb3. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZGLM2267185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a813bd3012bcb778842a5e65b7559024035be7a8699d2bc7fa79e15683a561. 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/QZHZ52257120.
Se Le Va la Cochina al Monte (Versión Alternativa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe19d6e440c944246e6814d4acd50b8d37e630f375968e659001b37284264782. 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/QZGLM2358803.
Homenaje a los Compadres: Tormentos/Remolinos/El Huequito