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 0x37b41d29df294bc01ca2aebf6b5b911713d9bee33fa81f1ec853b44dec32df19. 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/9fac847e-c1ad-458b-8605-7341a48d612c.json and https://artists.proofprofile.net/proofs/artist/9fac847e-c1ad-458b-8605-7341a48d612c.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 0x63603ec51999fd84c1df23197bad918201cdd47ba022a4ee8766a8e690a54b5d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:25:13Z), 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/QZMEQ2028261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b860d8c6f19db3923b1b1188e1f39a323120074a328f5f5a80927c834700d22. 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/QZMEQ2028265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8876daf0b0148fae1da5b7efc19571f056726a722bf1fda2e61a8a8dafca90c. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZMEQ2028266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14af0c2ac5c1fb5f2b17409cf4c5104144e8d78fd5404b2b8a04e9c0e638fa17. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:28:54Z), 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/QZMEQ2028267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21967d1eb0c8a6c52925a87d69071cdedaac906b11e43ac7f17d721c40109e8. 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/QZMEQ2028289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73b25544660107ff6e98e0cb8036303e96592cf1bd268eb8854455ba3b7fda6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:51Z), 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/QZMEQ2028290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11c9652dc6c61cec7a8b2917f654c638e64287d27dd1f981d1f39c21ec461cf. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZMEQ2028291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a467ca8784f0ce3f8831ba0625f047272aff45cac981607383b2ffe362e5826. 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/QZMEQ2028292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9438dd281ae689cdf1b46d461f48efe264c46edbc9787b3831c07aba0722be. 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/QZMEQ2028293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2825b6c9a9a0e898459fbd85ea96003f3d761440828cef509d3e74bc81fd54. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZMEQ2028296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485a26937e5f60298628cb572d4141382939ba40a03b8076194d64452fa80aea. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZMEQ2028330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2590c9583a867a5fdad3547368fbbe3c04b49f76f3ef07642930ae8863711fcd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMEQ2028332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d658ee395046244e932c5b3889ed6e873c3ac8215acb1fafcfc23b9df07ae3. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZMEQ2028333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba392b8ce061819f40b0c2578babb75a5e1eb0d567a95fb2e85ebf728b0564af. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:43:24Z), 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/QZMEQ2028334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc06fb30f0118057131b95b25b500b9f100f7a6124ff1a4841ea1841bec464d1. 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/QZMEQ2028337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382350efd881f5037119649e0ccb0e0ef04e3c9b67ff6282583a36ba6f4e225c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZMEQ2028338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1507f7b642cb7731c4aac20993259ab209da7d9a7994f13fc93de592e28cba82. 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/QZK6F2029166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9311ddfd088d36e1e54100716679cd49dea050bc8538156f1800f5b611c6313a. 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/QZK6F2029167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3477b6c643fb214a2510cf7c3cf8a2ae6ffa4ba9f8ad11211c8a2a9fa3ad2257. 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/QZK6F2029169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaae452510199ef69e6fbb2c6ec72b5c865b259a83f09204685d3d03ebfadb84. 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/QZMEQ2028384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19a702befe971409f037298d391bf5a530941d2b3cf186102359f5f1f5dedc5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZMEQ2028388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5413befb8970a7d5f536f8509de5570eebd3d547014831758bde6bf7cc521785. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:48:19Z), 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/QZMEQ2028391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3752f4acfb55b878e9d049e8cd4df80937bd0af00455c998dc08cc4fefe8a9ff. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZMEQ2028392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85825bc9928f1991c46e3b40a13595780de325ec9323ae1511af76e08ce97c2. 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/QZMEQ2025998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86bcf210cc32a09911186fd50ec28612b7ff1ed8883a36f0e0bc0192a7e8569. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:06:58Z), 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/QZMEM2004580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47949274b679013c747c50ac6a463f05570148bb3fbfe46287037d0c10b240a1. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QZMEM2004585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cef8a71e3b8bc00a8b374493a05eae0f21d29f4e3b30f7a0ee92a7266285b6. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/QZMEM2004588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3b706bf4bf94dd656a9a1799669005381fd4c29dfc75096420cf6302eed208. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:33:13Z), 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/QZNWQ2241509.
Himnos Y Coros Con La Rondalla Cristiana Sinaí
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e207255acd0baeb959b61494cecc5e891df5156981b8cce717a4cea35921a4. 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/QZTB62223031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf1252df522a03697c8caf84e80509781660e4027b48bebd56d1936894c3722. 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/QZNWV2476359.