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 0x6ebca47f01b204fabbad569cae001d478ca98c4be721a6fae364337058511d54. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70804717-ade9-4906-b588-e70985c5f208.json and https://artists.proofprofile.net/proofs/artist/70804717-ade9-4906-b588-e70985c5f208.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 0x1f7dab220706e72eaf8d8a9b1ff902f1df1e9c87dd12139fdf3493ad4b75dd86. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXSVC2200183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ecb25c4c44fde2ff797ca4482ed4719f03d70fe2f3510243c10f73170e2386. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXSVC2200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fa7a17a5dfc4a840638a837ce6aaebd9d152b004f3445ba984743ed9150481. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BXSVC2200184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd158d89e7ac4e2cc7ac321e567b5ff5ed672029457cd110e051045a9222df2f9. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BXSVC2200182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3327b5e9d9325d1fda81dca90e01885510df81a74dd360492249d3a70ab7ea9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXSVC2200177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ba163b843490168e28eab82a81f0bbdcb2f2490b51e84f51e010c1de585e48. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXSVC2200181.
Unha & Carne: Marcus Tardelli Interpreta Guinga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9a7769c99e71940378a887c97119ce868c9dd40a29bcffe70131f28aed9727. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRPUI0500769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea39cabb8e55e6ab353c4f15d00d7d9c39c248b80705e2c08978085501a08fd8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRPUI0500764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51398ad9209b022870b9add235baf55d610f049064a553fde69fcba3b5b9cf78. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRPUI0500763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36fdd064d33a50e5e5a571db51f4939811f2da77e2b0872c6f5481c7b4f9194. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BRPUI0500765.
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 0x8e197b50d49f63ffc4258cedcf8c46ecbefb56689241216832c841dbfa7f855b. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BRPUI0500766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6329d7166e1970eb183cde30986dccb9a22dd845e7313fc270b1fffab42721a4. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BRPUI0500767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf820557d60541ef97b9c939e89995642eee13f3bef9c65003bcb427c68c8340c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BRPUI0500768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ccb1f4ccfc5f2dfc765d207293d5c3c071e064ec9918d390a6e9a5fc079561. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BRPUI0500772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e91f21a4d22566d051d1c4b27d4387a788eb314328712d044c656eb15e90c33. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BRPUI0500770.
Influência do Jackson / Nítido e Obscuro / Geraldo No Leme / Para Jackson e Almira / Chá de Panela / Dá o Pé Loro (Baiões)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5de8c4286703e12d6e1404a453367e4101057be6765dcb35f0fd17ad4e64fd4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BRPUI0500771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda8bbeeaadaee1df3cb7903501b034e91d9ba2c36b06d31ed00ac2b7a34436e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BRPUI0500773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c98761f3d7506b70d5acbfde81b645a984ac499a4cebdca319449f0f1592f2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BRPUI0500774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07abb418d40d2c5eefe3ddae12347eb7b21761e39429c459be4efc5de061a54. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BRPUI0500901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9e0bbb4a151b53e42275acdad89a37bdbcb6644a10f1dd3dbf4f44af16a836. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRPUI0500902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854b3ed1ff6a009cdb11d0c78740055b2bbae4794b79881dcb8f9ce2970f3cb3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES25S2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d55dc4b94c551ac3347f86a4a487753bc66e76ce66b52ef7624b30623e9845. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES25S2000033.