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 0x88136ef974e65804b97bd4db68c6174ae05faa37fc26098b773f74e1a2b71c02. 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/57a3dfdb-a9a3-45ed-a986-fe5d0558de74.json and https://artists.proofprofile.net/proofs/artist/57a3dfdb-a9a3-45ed-a986-fe5d0558de74.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 0x74df7a49060bb3e7c21b9fb85e9a452d9635335686ddd79e94595a32f9371563. 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/DEVU51701183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fed44c274d07462a7d8fb6362173945b82a3630423e9f9c02e0b4ffcd71d40f. Chain 2 (Bitcoin): anchored in block 957895 (2026-07-13T18:41:29Z), 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/DEVU51701186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb8d740d628cd72e59a36bf2e91c4c4031f3a2dd4d621e9e7e2ac56927a3066. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEVU51701187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe024ab3d096b9549a538f7faa78141d102e97cdb04d8872aa5049ad1260ce229. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DEVU51701188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81fc636844a8c2932174c255327394e0039d8acf31e308e3e8b3ad99fcd98a9. 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/DEVU51701189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19508a7431840b58a29262bbdbea4b0331a491da7689d85f348822b76d2fba8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:09:55Z), 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/DEVU51701190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92241a62f23c42ef37b59010695d90d87b91197f49142cb22d33f0bd20e79c74. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEVU51701192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50200786fa73ee041e98a3c0be0b29e61161bad2ea0ad46be4e3962cddc55792. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:07:52Z), 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/DEVU51701193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebd1d335cdbcdc744a8d4771096b0ca8117320975619f5b689ccd5166c664d2. 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/DEVU51701194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08084c46163ff17b43a1451da8eada58506802073469f30635f8d47f9c32270. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/DEXO81994179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756b60c0f9598ef5b33ef36f0996d678310b51930a715938cd8cc1de32317f62. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:00:30Z), 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/DEXO81994180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c599f229da72e127fb6ad2456e7ecc494f6ae18e28c83fbf0271f4fc84feb1. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/DEXO81994183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5ae8d209e4187f6032115ee589c56cc34fc806981271b5d68d5fd689ede75f. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/DEXO81994184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc9d3e65b2c4ca1fb4d5f8986c4df4f2e996adc9a5a985e17ede4d7dc7131b6. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/DEXO81994185.
Así Canta Jerez en Navidad - Mi Dios Gitano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9778f7fc0d6d8a1329ddf9e9d1c35e0b3f501cb9dd3b338aa84db58c39c10435. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/DEUE22025981.
Así Canta Jerez en Navidad - Fiesta de Nochebuena
Así Canta Jerez en Navidad - Vamos, Nos Vamos
Así Canta Jerez en Navidad - Hacia Belén
Así Canta Jerez en Navidad - Tiene María
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a55df7f6a1ead3082a83e689384360bc68ffdd7a0dd26cb61ef50a858c8eee. 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/ES6102200644.
Así Canta Jerez en Navidad - Dicen que Nació
Así Canta Jerez en Navidad - La Luna Mare
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793e5218eedc856d2214788bd493e03086fab5e66e6f95a81669df81fcd28a16. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ES6102300736.
Así Canta Jerez en Navidad, Vol. 4 ¨La Estrella¨
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cd8e60213e7f71456e9eefed87385b527bcc8e3e65941649cf47851c2788e3. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/ESA092412791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385010a0953e0f29cdd23c4365c2b2564609d5681446f40ddf180b64deb1e660. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:39:49Z), 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/ESA092412793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae1eb54e5c00ce7bca6dc258e177c00b7402baea29bf38b8adffccbbba8ca07. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ESA092412794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81540ae6b08101ba20e251aaaf1ea6f2b6112b813230b23813cd182c8b0c6f6. 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/ESA092412795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59276e0f67d7068e0e8be8fc08dcb79fbe133a187bdf44c82fbe1e5c24efce7c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ESA092513930.