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 0xcf11090c7c3a78b892889e52fe04b2c1fc9e4631b93893f799cb2f1773623772. 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/c2274974-066e-4b39-be8c-42f2246655fc.json and https://artists.proofprofile.net/proofs/artist/c2274974-066e-4b39-be8c-42f2246655fc.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 0xffeef5b89f5cc1b90889481d91d79990f183388f225754496c9163db9df0e398. 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/DEU602210241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d21117d108e13c68496364555882c5896fbf50ea9b89b672e8f8c7792f2c323. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/DEU602210243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02f7dcb8e757b6dea4412a2356c7bcee6774bcdfda8b018237cb8f091442b1f. 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/DEU602210286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd922ff8215762c7432ab3c6c6bb4d246a0b2484b62ec461e39b7f6d9b98e9372. 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/DEU602310466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ead81f7aaef75ad34a2478b210172d0694b5ef177a8b2fcc603f95cc86730f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEU602310501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7992f1037edc197b6047f08e6ef8b4a0760b369b57554ac38962a2ab4411fa9e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEU602310498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01e0d744d5bd5d2e2df668351c21b148cb5a95b68fc975304763cbd16d50c8f. 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/DE1KY2402545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01e0d744d5bd5d2e2df668351c21b148cb5a95b68fc975304763cbd16d50c8f. 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/DE1KY2402545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946f0b687cfb7c0ac1b2a0095cadb530497b2ddc5c886c570ac8ab6cc71a190d. 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/DE1KY2402697.
Valkyries in the Sky (feat. Laura Guldemond & Tim Hansen)
Valkyries In The Sky (feat. Laura Guldemond & Tim Hansen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bb922334fd912554b4384cfae5ea9c5842884d2b8e946d68aae04a71bbf7c3. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/DE1KY2402785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8ad45a0f7e5d5b5d4c9237189175a4d9b152ae50ae3190b63824a963c2e45c. 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/DE1KY2402787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eeb16da073702e287cddcfc9302bc07911abff09ab61862f1c734e00575fe50. 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/DE1KY2402788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972f8052a23e150cc23941c30ce9fd1bcba836a568bd91c852c4865363f9032e. 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/DE1KY2402789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5be017d678bf002e98a1d8f4d78295ae32093b7afb41d04354591eea230a57. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DE1KY2402790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ed9edf62ee0ba999581bf855dd080d9d2a76daf6b8b6a8a1a427f2c82fe036. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DE1KY2402791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7517d4c54e2916424d52a6721ec5a29b68152886e5b5bf0ee8649fb0bee06405. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/DE1KY2402745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1bf5408de8a9d6e61b653c30f16fe850181c051d2531dbc79f5dc483d4a684. 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/DE1KY2402792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5387cb67ff6500be5512d1875f4f1cfec8d8ee948a8a575d88002cba27bbac. 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/DE1KY2402793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bb922334fd912554b4384cfae5ea9c5842884d2b8e946d68aae04a71bbf7c3. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/DE1KY2402785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eeb16da073702e287cddcfc9302bc07911abff09ab61862f1c734e00575fe50. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DE1KY2402788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972f8052a23e150cc23941c30ce9fd1bcba836a568bd91c852c4865363f9032e. 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/DE1KY2402789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ed9edf62ee0ba999581bf855dd080d9d2a76daf6b8b6a8a1a427f2c82fe036. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DE1KY2402791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1bf5408de8a9d6e61b653c30f16fe850181c051d2531dbc79f5dc483d4a684. 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/DE1KY2402792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5387cb67ff6500be5512d1875f4f1cfec8d8ee948a8a575d88002cba27bbac. 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/DE1KY2402793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4311657462916c083ddd5c577fc7005cd7bd719102f47d59e9d9c91bd9b16e. 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/DE1KY2405792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4311657462916c083ddd5c577fc7005cd7bd719102f47d59e9d9c91bd9b16e. 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/DE1KY2405792.